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  • 1995-1999  (58)
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  • 1995-1999  (58)
  • 1990-1994  (131)
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  • 1
    Digitale Medien
    Digitale Medien
    Non-selective precultivation of bacteria able to degrade different polycyclic aromatic hydrocarbons (PAH) (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 337-345 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The influence of the precultivation with different carbon sources on the ability of three different bacterial strains (Sphingomonas sp. strain BA2, Gordona sp. strain BP9, Mycobacterium sp. strain VF1) to grow on phenanthrene. anthracene, pyrene or fluoranthene as the sole source of carbon and energy were studied. The strains were found to maintain their ability to grow on two of the four PAH after 30 serial transfers in liquid nutrient broth medium without selective pressure. The ability to grow on these PAH as the sole carbon and energy source was also maintained after curing experiments with acridine orange. The high stability of the PAH-degradation phenotype suggests that the tested strains carry at least parts of the PAH-degradation pathway genes on the chromosome. The PAH-degradation versatility of the strains was also influenced by the carbon source being used for precultivation. Possible reasons for the particularly good impact of the precultivation on hexadecane on the PAH degradation are discussed in this paper.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150404
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  • 2
    Digitale Medien
    Digitale Medien
    Masthead (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995) 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150401
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  • 3
    Digitale Medien
    Digitale Medien
    The properties of subtilisin, Novo type, immobilized on porous glass (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 123-129 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Studies of the properties of subtilisin, Novo type, immobilized on porous glass with the aid of hexamethylene diisocyanate were carried out. The immobilized proteinase preparation shows optimum activity at a pH value of 10.7 and at a temperature between 60-65°C. It was stable in a wider range of pH and temperature values than the native subtilisin. The KM values for hemoglobin and BAEE were 9.2 × 10-5 [M] and 139 × 10-5 [M], respectively. Under relatively non-aqueous conditions, immobilised subtilisin was able to synthesize phenylacetic acid ethyl ester.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150117
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  • 4
    Digitale Medien
    Digitale Medien
    The microbial conversion of different agricultural residues and its biological efficiency (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 131-135 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: A number of agricultural residues such as Saccharum munja Roxb. (Sarkanda), Oryza sativa L. (Paddy straw, as the control), Vinna unguiculata (L.) Walp (Cowpeas), Abelmoschus esculentum (L.) Moench (Lady's finger), Zea mays L. (Maize) and Cyamopsis tetragonoloba (L.) Taub. (Guar) were used for the cultivation of Pleurotus sajor-caju (Fr.) Singer. The biological efficiency of the fruit bodies of Pleurotus sajor-caju from the above mentioned substrates were found to be 13.47, 11.20, 8.37, 8.31, 6.87, and 6.08 percent, respectively. S. munja and paddy straw were found to be the best substrates for the growth of P. sajor-caju followed by Z. mays, V. unguiculata, A. esculentum, and C. tetragonoloba.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150119
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  • 5
    Digitale Medien
    Digitale Medien
    Römpp Chemie Lexikon. (Vol. 3-6). Stuttgart, New York: Georg Thieme Verlag 9the edition; DM 1488,- (vol. 1-6). ISBN 3-13-734809-9 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 136-136 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150120
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  • 6
    Digitale Medien
    Digitale Medien
    Masthead (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995) 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150201
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  • 7
    Digitale Medien
    Digitale Medien
    Whey disposal by deproteinization and fermentation (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 139-148 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The non-pollutant plant support material of the dwarf duckweed Wolffia arrhiza (Fam. Lemnaceae) was used for the entrapment of living yeast cells (Kluyveromyces fragilis) which hydrolyse lactose with the subsequent fermentation of glucose and galactose at high cell densities (up to 7.0 × 108/ml support). The stabile yeast-plant cell immobilizates are able to produce ethanol from lactose-containing media (e.g. whey) by batch fermentation (on a rotary shaker) or continuous fermentation (in a turbulence reactor) for several days (at a pH below 4.2 and a temperature of 30°C). The removal of whey proteins by a preceding heat denaturation of whey, high dilution rates, CSo values of 50 to 60 g lactose per litre whey and the preferential use of the K. fragilis strain DSM 7238 were determined as the prerequisites for an optimum continuous fermentation. Economically interesting productivities (Pmax ≥ 15 g ethanol/1 · h, D = 0.72 h-1) with an actual lactose turnover of 90% were obtained by using these parameters.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150202
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  • 8
    Digitale Medien
    Digitale Medien
    Grenzwerte. Kennzahlen zur Umweltbelastung in Deutschland und in der EG. Landsberg: ecomed-Verlag GmbH & Co., KG 254 Seiten, DM 98,- (Fortsetzungspreis) DM 178,- (Einzelpreis ohne Abonement der Aktualisierungen). ISBN: 3-609-75700-0 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 160-160 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150204
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  • 9
    Digitale Medien
    Digitale Medien
    Yeast entrapment in Duckweeds: Immobilization performance and biomass localization within the support particles (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 149-159 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Cell structured support material (CSM) prepared from Wolffia arrhiza fronds were loaded with Saccharomyces cereevisiae by the propagation of yeast cells introduced in the aerenchyma. The loading process could be strongly accelerated by preventing the growth of freely suspended yeasts in the fermenter. The pathway of the inoculation through the stomata could be visualized by transparent light microscopy of amylase and protease treated CSM. Slices of the loaded CSM clearly showed that the framework of the inner chlorenchyma cells remains intact during the propagation of the included yeast cells. Most of the yeast cells were found to be localized as a dense suspension within unbroken cells. During long-term treatment of the loaded CSM at high convection, about one third of the yeasts was released into water with a constant rate greater than 0.34 h-1. The residual amount of yeast cells remained in a stable compartment from which further loss did not occur for the period tested (20-48 h). It is assumed that the stable compartment is identical with the interior of chlorenchyma cells. The results are discussed in relationship to the possible use of the immobilized biomass in fermentation.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150203
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  • 10
    Digitale Medien
    Digitale Medien
    Fermentation kinetics of free and immobilized Penicillium raistrickii able perform the 15α-hydroxylation of 13-ethyl-gon-4-ene-3,17-dione (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 161-171 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Growing Penicillium raistrickii i 477 cells immobilized by microencapsulation, entrapment in calcium alginate beads and photopolymerization were used for the 15α-hydroxylation of 13-ethyl-gon-4-en-3,17-dione (I) to 15α-hydroxy-13-ethyl-gon-4-en-3,17-dione (II). The immobilized cells had lower maximum specific growth rates and yield coefficients when cultivated on the carbon source glucose than the non-immobilized cells, which leads to lower volumetric productivities than the use of nonimmobilized cells. However, the cells immobilized by microencapsulation and calcium alginate entrapment showed a specific productivity equal to that of the respective non-immobilized cells based on product formation per dry biomass and time. Photommobilized cells were not able to grow in the presence of the steroid because the substrate concentrations within the polymer reached inhibiting amounts for growth and product formation. In the absence of the steroid, the growing photoimmobilized cells showed a prolonged lag-phase in comparison with the free cells.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150205
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  • 11
    Digitale Medien
    Digitale Medien
    Molecular genetics of bacteria. Chichester, New York, Brisbane, Toronto, Singapore: John Wiley & Sons, 1994 287 pages, 140 figures, £ 16.95 ISBN 0-471-95111-0 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 172-172 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150206
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  • 12
    Digitale Medien
    Digitale Medien
    “Eco-Tech Network”. An information, education and research network for ecotechnology Eco-Technology centres - interconnected world-wide (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 196-198 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150208
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  • 13
    Digitale Medien
    Digitale Medien
    “Macroscopic pattern analysis” based on formal analogies as a scientific methodology for complex systems (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 173-195 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Bioprocess engineering at present concentrates on the enormous problems in the environment. What is therefore needed is a sound methodology, which should be based on the interactions between the physiology of biological reaction networks and physical processes in the environment and which should be an analogy to bioreactor performance. The conventional methodology is empirically oriented, using pilot plant data for the experimental estimates of process economics, where all further details are elucidated following the mechanistic approach on the microscopic level based on assumed mechanisms (causalities). According to the new view, the new systems-based methodology uses mathematical models as approximations and includes all the interactions. Pilot plant data are needed for model falsification, using analogies on the formal macroscopic level. Bioreactor scale-up as one application is a more rapid procedure of reasonable accuracy, where both the biokinetics as well as the fluid dynamics are quantified using formal macroscopic analogies.Model consistency and plausibility are the basic criteria when using model computer simulations as a decisive aid, while experiments lose their central role and are on longer the basis for evaluating the scientific work; they are simply the basis of the researcher's intuition. Another typical feature of complex systems is that model parameters are interdependent. The final decisive fact will be the mental experiment (“thinking” with the left and right side of the brain), which can be supported using computer simulations. This evolutionary interplay between the three realities of thinking, experimenting and simulating leads to a holistic progress towards the better understanding of highly complex systems. It offers the solution to the problems, which is needed in future.
    Zusätzliches Material: 16 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150207
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  • 14
    Digitale Medien
    Digitale Medien
    Integrated design of a fermentation plant. The production of Baker's yeast. Weinheim, New York, Basel, Cambridge, Tokyo: VCH Verlagsgesellschaft mbH, 1994 XIV, 86 pages, 12 figures, 6 tables; DM 98,-(£ 16.95) ISBN 3-527-30029-5 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 209-210 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150210
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  • 15
    Digitale Medien
    Digitale Medien
    The purification and immobilization of Penicillium notatum β-galactosidase (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 211-222 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Penicillium notatum No. 1 as a producer of β-galactosidase was cultivated in a 5-1 fermenter. Various methods of protein isolation and concentration from the culture fluid were optimized. Then the conditions of β-galactosidase purification using an affinity chromatographic technique were established. The purified enzyme was immobilized on a controlled porous glass (CPG). The optimum temperature and pH values of the native and immobilized forms of β-galactosidase were determined as 50°C and 30-50°C as well as pH 3 and pH 3-5, respectively.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150211
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  • 16
    Digitale Medien
    Digitale Medien
    Masthead (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995) 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150101
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  • 17
    Digitale Medien
    Digitale Medien
    Bioprocess engineering. New York, Chichester, Brisbane, Toronto, Singapore: Wiley-Interscience, John Wiley & Sons, Inc., 1994, 338 pages; £ 58. ISBN 0-471-03534-3 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 40-40 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150104
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  • 18
    Digitale Medien
    Digitale Medien
    Intensification of transfer processes in biotechnology and chemical engineering using static mixers. (Review) (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 3-26 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: A review of the intensification of moment, mass and heat transfer using an “unconventional” method, namely the application of static mixers, also known as “motionless mixers”, is presented in this paper.After the presentation of some structural types of static mixers, studies with particular emphasis on flow behaviour, pressure drop, mixing, mass and, heat transfer in the presence of static mixing devices, used in biotechnology and chemical engineering, were discussed.The suitability of static mixers to enhance the transfer process parameters was also justified by the low energy requirement, while the fluids might have different viscosities and because of this fact they could remove any mistakes made by the equipment.The article is not directed towards a comprehensive review, but it should serve as a landmark in future undertakings.
    Zusätzliches Material: 18 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150102
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  • 19
    Digitale Medien
    Digitale Medien
    Colonisation of seedling roots by 2,4-D degrading bacteria: A plant-microbial model (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 27-39 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The development of model plant-microbial associations between Gram negative soil microbes capable of degrading phenoxyacetate herbicides, such as 2,4-D and 2,4-D methyl ester, and the crops canola and wheat was described. Both an Acinetobacter baumannii pJP4 transconjugant and Alcaligenes eutrophus JMP 134 colonised non-parasitically on the roots of sterilised seedlings in a hydroponic system. Laser scanning confocal microscopy has shown that colonisation occurred both on the root surface and deeper inside the mucilage layer or inside some surface root cells. When 2,4-D was added to the hydroponic medium supporting the growth of those seedlings colonised by 2,4-D degrading bacteria, the gas chromatographic analysis showed a rapid decrease in the concentration of this herbicide. These bacteria colonising the root system were shown to be responsible for the degradation of 2,4-D. Plants inoculated with the 2,4-D degrading microbes were subsequently found to be less susceptible to damage by the herbicide in such hydroponic systems.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150103
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  • 20
    Digitale Medien
    Digitale Medien
    Growth control and ppGpp synthesis in Brevibacterium flavum cells at various medium mixing rates and aeration intensities (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 41-48 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Under the conditions of various aeration and medium mixing intensities (even at a constant medium oxygen partial pressure value), the variations in the RNA synthesis as well as the growth rate of lysine producing Brevibacterium flavum strains are inversely correlated with the ppGpp concentration in the cells.An increase in the ppGpp synthesis and a decrease in the RNA content in the cells was observed in the cases of a low cell energy charge value (lower than 0.6). This took place in the cases of bacterial cultivation at a low or very high medium aeration and mixing intensity. Hence, the energy production in the cells, the ppGpp synthesis and the growth control mechanism in Corynebacteria may be regarded as connected processes.
    Zusätzliches Material: 3 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150105
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  • 21
    Digitale Medien
    Digitale Medien
    Formation of a micronuclei-like structure induced by colchicine treatment in Saccharomyces cerevisiae (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 49-55 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Minute nuclei named “smaller nuclei” were generated when the cells of Saccharomyces cerevisiae were treated with colchicine. The formation of “smaller nuclei” seemed to be related to nuclear division because those nuclei were only produced under conditions suitable for nuclear division. The fact that the average DNA content of “smaller nuclei” was almost one tenth of that of the isolated normal diploid nuclei showed that the “smaller nuclei” are not condensed nuclei but aneuploid nuclei like micronuclei in animal cells. It appeared therefore likely that a micronuclei-like structure could be produced by colchicine treatment in S. cerevisiae.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150106
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  • 22
    Digitale Medien
    Digitale Medien
    Biotechnology. A multi-volume comprehensive treatise completely revised 2nd edition. Volume 3. Bioprocessing. Weinheim, New York, Basel, Cambridge: VCH Verlagsgesellschaft mbH, 1993. ISBN 3-527-28313-7 (Weinheim). ISBN 1-56081-153-6 (New York). Single volume price: DM 490.00, Series Price: DM 390.00 per volume, Series ISBN 3-527-28310-2 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 55-56 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150107
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  • 23
    Digitale Medien
    Digitale Medien
    Degradation of synthetic lignin by the protoplasts of Phanerochaete chrysosporium in the presence of lignin peroxidase or manganese peroxidase (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 57-66 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Lignin was mineralized in the experiments in which 14C-lignin was incubated with lignin peroxidase or manganese peroxidase in a tartrate buffer in the presence of cycloheximide-treated protoplasts obtained from the ligninolytic mycelia of Phanerochaete chrysosporium. The rate of lignin mineralization was dependent on the lignin peroxidase or manganese peroxidase concentration in the medium. In the experiments in which lignin was incubated with lignin peroxidase or manganese peroxidase, lignin was repolymerized irrespective of the presence of protoplasts mineralizing lignin, suggesting that an active degradation of lignin and repolymerization took place. Taking into account that lignin peroxidase and manganese peroxidase were the only extracellular enzymes in the experiments in which lignin was mineralized by the protoplasts, it is postulated that lignin peroxidase and/or manganese peroxidase can degrade lignin into small fragments which can then be further absorbed by the fungal cells and subsequently degraded to CO2.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150108
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  • 24
    Digitale Medien
    Digitale Medien
    Behaviour of different Lactobacillus species in the production of lactic acid by the fermentation of whey (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 67-76 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The behaviour of different Lactobacillus casei and Lactobacillus plantarum species in the fermentation of Manchego whey was experimentally studied and the results were statistically analyzed using a hypothesis contrast method. The steadiness of the velocity of the production of lactic acid during the fermentation process allowed the use of this variable to compare the different microorganisms. From this comparison it was inferred that the individuals of the same population behave alike and that the L. casei population produces lactic acid at a higher rate than the L. plantarum population. A competitive effect among the members of the L. casei population was also observed.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150109
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  • 25
    Digitale Medien
    Digitale Medien
    Monoterpenol glycosides in plants and their biotechnological transformation (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 77-95 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The present paper reviews the different monoterpenols and monoterpene polyols identified in the glycoside form in the plant kingdom. The glycosidic moieties involved are also considered. The natural pathways for the synthesis and hydrolysis of these monoterpene glycosides and the different hypothesis concerning their metabolism are discussed. The present state of different projects for the biotechnological transformation of these aromatic precursor compounds is reported.
    Zusätzliches Material: 8 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150110
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  • 26
    Digitale Medien
    Digitale Medien
    Bioprocess engineering. Biotechnology and microbiology. Cambridge, New York, Melbourne: Cambridge University Press, 1994, 293 pages, 100 figures, 50 tables; £ 58,-(H/b). ISBN 0-521-35020-4 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 96-96 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150111
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  • 27
    Digitale Medien
    Digitale Medien
    Glucose oxidase biosynthesis in relation to biochemical mutations in Aspergillus niger (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 107-115 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The production of extracellular glucose oxidase in a submerged culture by a number of auxotrophic, 2-deoxy-D-glucose resistant and protease-less mutants of Aspergillus niger was evaluated. Among the auxotrophic strains, no evident dependence was found between the kind of the nutritional requirements and the level of the glucose oxidase activity. However, the majority of auxotrophs, requiring serine or niacin, showed a higher enzyme activity (from 16 to 680%) than the parent strain. The dynamics of the glucose oxidase synthesis by the free and immobilized mycelium of the most active niacin- mutant of A. niger was also investigated.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150113
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  • 28
    Digitale Medien
    Digitale Medien
    Cloning and expression of the Neisseria meningitidis 5C outer membrane protein (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 97-106 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The 5C outer membrane protein, one of the N. meningitidis class 5 proteins, was preferably expressed in bacteria isolated from the nasopharynx and its role in adhering to the mucosal cells and invading them as well as the development of anti-5C antibodies in healthy carriers was demonstrated. Anti-5C monoclonal antibodies are bactericidal in the presence of the human complement. The immunodominant region of the 5C protein is highly conserved among the different strains of N. meningitidis, and the opc gene, which encodes the protein, does not seem to show antigenic variations.Here the isolation of the opc gene from the Cuban strain B:4:P1.15 by PCR (Polymerase Chain Reaction) is presented. Under the regulation of the tryptophan promoter, the gene was cloned and sequenced in E. coli with a high level of expression and fused to the amino-terminal end of the interleukin-2 gene. In the dot-blot experiments, the presence of the gene in those strains which did not express the protein in the whole cell ELISA was also detectable.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150112
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  • 29
    Digitale Medien
    Digitale Medien
    Production of thiaminase I for analytical purposes (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 117-121 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: A simple medium enhancing the production of thiaminase I (EC 2.5.1.2) by Bacillus thiaminolyticus was developed. Ca2+ stimulated the enzyme production. The activity of extracellular thiaminase I ranged between 1.29 and 1.33 U/ml medium.
    Zusätzliches Material: 4 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150115
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  • 30
    Digitale Medien
    Digitale Medien
    Ologosaccharides: Production, properties and applications. (Japanese Technology Reviews. Section E: Biotechnology. Volume 3, number 2). Switzerland, Australia, Belgium, France, Germany, Great Britain, India, Japan, Malaysia, Netherlands, Russia, Singapore, USA: Gordon and Breach Science Publishers, 1993 XVIII + 235 pages, 120 figures, 62 tables; $ 167.00. ISBN 2-88124-890-X (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 116-116 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150114
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  • 31
    Digitale Medien
    Digitale Medien
    Principles and techniques of practical biochemistry. Cambridge, New York, Melbourne: Cambridge University Press, 1994 586 pages, 212 figures, 45 tables; £ 19.95 ISBN 0-521-42809-2 paperback (fourth edition) (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 122-122 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150116
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  • 32
    Digitale Medien
    Digitale Medien
    Genetic engineering of microorganisms. VCH Verlagsgesellschaft mbH: Weinheim, New York, Basel, Cambridge, Tokyo, 1993, 178 pages, 51 figures, 17 tables; DM 38. ISBN 3-527-30039-2 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 130-130 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150118
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  • 33
    Digitale Medien
    Digitale Medien
    Advances in biosensors. London (England), Greenwich (Conn., USA): JAI Press Ltd. Volume 1, XII + 299 pages, 141 figures, 25 tables; £ 58,-; ISBN 1-55938-240-6 Volume 2, XII + 343 pages, 148 figures, 8 tables; £ 58,-; ISBN 1-55938-270-8 Supplement 1, “Chemical Sensors for in vivo and in vitro Monitoring”, XI + 265 pages, 31 figures, 32 tables; £ 58,-; ISBN 1--55938--630--4 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 287-288 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150306
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  • 34
    Digitale Medien
    Digitale Medien
    Continuous semi-solid cultivation for the production of cellulase by Trichoderma reesei mutants using a polyurethane foam carrier and a liquid medium (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 289-296 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The production of cellulase was investigated in semi-solid state culture using the immobilized mycelium of Trichoderma reesei mutants on polyurethane foam impregnated with lactose medium. An extremely high value of about 2.6 FPU/ml was reached after the cultivation of T. reesei D-78085 on a 0.5% lactose medium in continuous culture at a pH medium of 4.0 when a bioreactor with vertical polyurethane foam plates was used. The enzyme yield on lactose was 520 FPU/g of lactose metabolized in comparison with 160 FPU/g using a stirred tank bioreactor.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150307
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  • 35
    Digitale Medien
    Digitale Medien
    The molecular cloning and sequencing of the nitrilase gene of Rhodococcus rhodochrous PA-34 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 297-306 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The nitrilase of Rhodococcus rhodochrous PA-34 catalyzes the production of optically active amino acids from aminonitriles. The amino acid sequence of the NH2 terminus of the purified nitrilase was determined for the preparation of a synthetic oligonucleotide as a southern hybridization probe. A 9.5-kbp Pst I-fragement, which hybridized with the oligonucleotide probe, was isolated from R. rhodochrous PA-34 genomic libraries constructed in pUC 19. Nucleotide sequence analysis revealed that the nitrilase gene codes for a putative polypeptide of 380 amino acids which correspond to a relative molecular weight of 41, 723.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150308
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  • 36
    Digitale Medien
    Digitale Medien
    Cultivation of a filamentous mould in an airlift bioreactor (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 323-335 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Cephalosporin C biosynthesis was investigated in a pilot-plant external-loop airlift bioreactor for evaluating the capacity of this bioreactor to surpass the problems which arise from the morphology of the mould and the rheology of the broth.Some of the results were compared with those obtained in a stirred tank bioreactor.The dilution and the use of static mixers was necessary to overcome the effects of the high viscosities. The oxygen transfer rate represented 84% of that in the stirred bioreactor, but the efficiency of the power utilization was higher.The specific productivity of Cephalosporin C is comparable to that obtained in the stirred tank bioreactor, but the average specific power consumption was found to be 2/3 of that in the stirred vessel.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150402
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  • 37
    Digitale Medien
    Digitale Medien
    Methoden der Biotehnologie. Jena, Stuttgart: Gustav Fischer Verlag, 1994 291 pages, 53 figures, 32 tables; DM 78,-. ISBN 3-334-60836-0 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 346-346 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150405
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  • 38
    Digitale Medien
    Digitale Medien
    Studies of the mixing character and flow distribution in mycelial fermentation broths (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 355-366 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The influence of two mixing systems on the principal parameters of mycelial fermentations of Aspergillus niger, Fusicoccum amygdali Del. and Fusarium moniliforme Sheld. as well as their metabolite citric acid, fusicoccin and gibberellic acid production was analyzed from the viewpoint of flow energy distribution in a bioreactor.The growth and metabolite synthesis during fermentation was compared under different mixing conditions in the fermenter FU-8 with a turbine mixing system (TMS) and a counterflow mixing system (CMS). It was found that the growth, productivity and respiration characteristics as well as the morphology of these cultures varied dependent on the mixing system and agitation regime used. The counterflow mixing system was more favourable for large agglomerates (F. amygdali) or soft pellets (A. niger) forming fungi, while the turbine mixing system was more effective for F. moniliforme growing in the form of small clumps and freely dispersed hyphae. Flow characteristics under different mixing conditions were analyzed in a model fermenter.The kinetic energy of flow fluctuations was measured in gassed and ungassed water and different fermentation broth systems by using a Stirring Intensity Measuring Device (SIMD-F1). The difference of the energy values at different points was better expressed in the fermenter with a turbine mixing system in comparison with that having a counterflow mixing system. High viscous F. amygdali and A. niger broth provided higher energy values compared to water and low viscous F. moniliforme broth. It was observed that the intensity of growth and the intensity of the synthesis decreased at very high energy values, which was obviously connected to the influence of the irreversible shear stress on the mycelial morphology.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150408
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  • 39
    Digitale Medien
    Digitale Medien
    Improved ethanol production from whey with Saccharomyces cerevisiae using permeabilized cells of Kluyveromyces marxianus (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 387-390 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Permeabilized cells of Kluyveromyces marxianus CCY eSY2 were tested as the source of lactase in the ethanol fermentation of concentrated deproteinized whey (65-70 g/l lactose) by Saccharomyces cerevisiae CCY 10-13-14. Rapid lactose hydrolysis by small amounts of permeabilized cells following the fermentation of released glucose and galactose by S. cerevisiae resulted in a twofold enhancement of the overall volumetric productivity (1.03 g/l × h), compared to the fermentation in which the lactose was directly fermented by K. marxianus.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150413
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  • 40
    Digitale Medien
    Digitale Medien
    Stability of the pBR322 plasmid derivative pBB210 in Escherichia coli TG1 under non-selective and selective conditions (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 375-380 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The stability behaviour of the pBR322 plasmid derivative pBB210 with β-lactamase gene and human interferon-α1 gene in Escherichia coli TG1 was studied in chemostat cultures under non-selective (medium without antibiotics), selective (medium with β-lactam antibiotic ampicillin) and modified selective (medium with ampicillin and the β-lactamase inhibitor sulbactam) conditions. Under non-selective conditions, a behaviour typical of unstable systems was found. Under selective conditions, the behaviour predicted by the models was obtained - the fraction of plasmid-bearing cells in the population approached a constant value which was dependent on the ampicillin concentration in the feeding and on the cell concentration in the chemostat. Under modified selective conditions, the higher the concentration of sulbactam in the medium was, the higher the fraction of plasmid-bearing cells was in steady state conditions.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150411
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  • 41
    Digitale Medien
    Digitale Medien
    Techniques and instrumentation in analytical chemistry (volume 16) flow - through (bio) chemical sensors. Amsterdam, London, New York, Tokyo: Elsevier Science B.V., 1994 332 pages; Dfl. 355.00, US$ 202.75 ISBN 0-444-89866-2 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 267-268 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150303
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  • 42
    Digitale Medien
    Digitale Medien
    Changes in protein secretion of Aspergillus niger caused by the reduction of the water activity by potassium chloride (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 277-287 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The effect of the rapid reduction of the water activity (aw) on the extracellular protein and amylolytic activity of Aspergillus niger was studied. An aw value gradient from 0.90 to 0.99 in KCl solutions was applied for the mycelium treatment. It was found that the aw reduction considerably influenced the protein secretion. This phenomenon was dependent on the age of the treated mycelium and the range of the aw gradient. The highest protein and enzyme secretion yields were obtained at aw = 0.98 using a 72-h old mycelium. In comparison with the non-treated mycelium, the increase in the secretion amounted to about 60% for the amylolytic activity and 37% for the soluble protein, respectively. It was shown that the mycelium incubated in KCl solutions of an aw value from 0.90 to 0.99 had the ability for regeneration in fresh CZAPEK-DOX medium. The effect of the osmotic shock on the protein secretion was limited only for the treated cell population and declined in the mycelium which was regenerated after the transfer into the culture medium.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150305
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  • 43
    Digitale Medien
    Digitale Medien
    Characterization of biosurfactants and their use in pollution removal - State of the Art. (Review) (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 251-267 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Surface-active compound of biological origin (biosurfactants) have only been described in the past few decades. With the advantage of biodegradability and production on renewable resources, biosurfactants have been gaining prominence and their applications are becoming wider. So far, literature contains mixed reports on the successes of the applications of biosurfactants and their economical viability. They remain compounds which are not very well understood, yet, with several important applications. The target industries for biosurfactant use are the petroleum remediation industries and environmental conservation agencies. These industries, however, seem reluctant to use them for fear of dealing with microbes or microbial products. This includes cleaning up oil spills from the environment, remediation of metal-contaminated soils or waste streams, mobilizing heavy oil sludge and enhanced oil recovery. The importance of biosurfactants, their production, characteristics and limited successes and applications in oil pollution remediation and oil storage tank cleaning are discussed.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150302
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  • 44
    Digitale Medien
    Digitale Medien
    Capacities and limits of three different technologies for the biological treatment of leachate from solid waste landfill sites (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 269-276 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Leachate from a municipal waste landfill site was treated using an activated sludge bioreactor, a fluidized bed biofilm reactor and a packed-bed column reactor (trickling filter).The leachate contained high organic matter (2.0-2.6 g/l of COD), high ammonium (300-700 mg/l) and sulphide (200-800 mg/l) concentrations, as well as low metal concentrations.The continuously operating reactors were employed to study the effects of TOC loading on the removal of TOC as well as on the nitrification and denitrification processes.Among the three biological treatment technologies investigated, the fluidized bed biofilm reactor was best with respect to removing ammonia and TOC. More than 90% of TOC and 99% of ammonia were removed when TOC loading was less than 0.5 kg/m3 × d. At a TOC loading of 4 kg/m3 × d, the removal of TOC and ammonia was 80% and 99%, respectively.In contrast, the treatment of leachate with the packed-bed reactor was successful in TOC removing only at TOC loading less than 0.3 kg/m3 × d (TOC elimination decreased from 86% at 0.06 kg/m3 × d to 60% at 0.3 kg/m3 × d). However, the reactor was active in nitrification even at a higher TOC loading (more than a 98% ammonia elimination at a TOC loading of 0.5 kg/m3 × d).Leachate was processed in the activated sludge reactor when TOC loading was less than 0.5 kg/m3 × d (with a removal of TOC and ammonia up to 83% and 99%, respectively). The activated sludge reactor was also effective in TOC removal at a higher TOC loading (e.g. a 74% TOC removal at a TOC loading of 1 kg/m3 × d), but for ammonia elimination, the activity continuously decreased (less than 60% ammonia removal at a TOC loading of 1 kg/m3 × d).Overloading in the activated sludge system was indicated by a high concentration of ammonia and nitrite in the effluent. In the packed bed reactor, overloading was characterized by a progressively incomplete TOC removal. No significant overloading was found in the fluidized bed reactor up to a TOC loading of 4 kg/m3 × d.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150304
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  • 45
    Digitale Medien
    Digitale Medien
    Biological reaction engineering. Principles, applications and modelling with pc simulation. Weinheim, New York, Basel, Cambridge: VCH Verlagsgesellschaft, 1992 438 pages, DM 228,-ISBN 3-527-28511-3 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 317-318 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150310
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  • 46
    Digitale Medien
    Digitale Medien
    Studies on the root nodules of leguminous plants: The production of indole acetic acid in culture by a Rhizobium sp. from a leguminous climbing shrub Derris scandens benth (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 307-317 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The Rhizobium sp. When isolated form the root nodules of a leguminous climbing shrub Derris scandens produced a high amount of indole acetic acid (IAA) (135.2 μg/ml) from the tryptophan-supple-mented basal medium. Growth and IAA production started simultaneously, and the maximum amount of IAA was produced as a secondary metabolite in the stationary phase of growth. The IAA production by the Rhizobium sp. was increased by 503% when the medium was supplemented with mannitol (2%), KNO3 (0.2%), nicotinic acid (0.1 μg/ml) and MnSO4 (1 μg/ml) in addition to tryptophan (4 mg/ml)/The possible role of the rhizobial production of IAA on the rhizobia-legume symbiosis is also discussed.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150309
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  • 47
    Digitale Medien
    Digitale Medien
    Flow cytometry: New developments NATO ASI series, Series H, cell biology, volume 67. Berlin, Heidelberg, New York, London, Paris, Tokyo, Hong Kong: Springer-Verlag 473 pages, 158 figures, 12 tables; DM 348,- ISBN: 3-540-54606-5 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 335-336 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150403
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  • 48
    Digitale Medien
    Digitale Medien
    Biosensoren. Berlin, Heidelberg, New York, London, Paris, Tokyo, Hong Kong: Springer-Verlag, 1995 417 pages, 181 figures, 24 tables; DM 49.80. ISBN 3-540-57478-6 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 354-354 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150407
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  • 49
    Digitale Medien
    Digitale Medien
    Determination of the Ks values during the growth of Alcaligenes eutrophus on phenol, 2,4-dichlorophenoxyacetic acid and fructose (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 347-353 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The determination of the KS values presented here is based on the estimation of the stationary substrate concentrations in continuous cultivation experiments. The separation of biomass from the suspension was performed by an ultrafiltration step which succeeded within one second. The decay of substrate concentration during sampling was calculated to amount to less than 6% of the stationary substrate concentration at relevant growth rates. The KS values derived from these reduced substrate concentrations deviated by only 10% from the theoretical values at a biomass concentration of about 1 g/1. Thus relevant kinetic parameters can be calculated from the data obtained by this procedure. Values of 11, 59 and 14 μM were obtained with 2,4-dichlorophenoxyacetic acid (2,4-D), phenol and fructose, respectively. Similar KS values were derived with 2,4-D and fructose by using a respirationbased determination for reasons of comparison. With phenol this value was only 7 μM which is as cribed to a physiological background.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150406
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  • 50
    Digitale Medien
    Digitale Medien
    Biotechnologie in der Lebensmittelindustrie. Berlin, Heidelberg, New York, London, Paris, Tokyo, Hong Kong: Springer-Verlag XVII + 241 pages, 54 figures, 24 tables; DM 49.80 ISBN 3-540-57452-2 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 374-374 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150410
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  • 51
    Digitale Medien
    Digitale Medien
    Physiological restriction of the L-lactic acid production by Rhizopus arrhizus (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 367-374 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The influence of basic physiological factors on the quality of inocula and L(+)-lactic acid production by Rhizopus arrhizus CCM 81 09 were studied.The most effective preparation of the spores (5 × 107 spores/ml) and subsequent good lactate production was achieved on the agar medium with soil extract and malt agar. The optimum initial amount of active spores for inoculation was 103-104 spores/ml. The preparation of inoculum required intensive stirring with lower aeration and pH maintained in the range from 4.8 to 6.0 by the addition of CaCO3. The maximum yield of lactic acid production was achieved by using 5% (v/v) of 24-h-old inoculum. The intensity of lactic acid production in the inoculum was proportional to its production in the subsequent steps of fermentation and can be used as a fast control of the physiological state of the producers.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150409
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  • 52
    Digitale Medien
    Digitale Medien
    Effect of oleic acid on the production of ethanol and fructose from glucose/fructose mixtures in an immobilized cell reactor (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 381-386 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Saccharomyces cerevisiae ATCC 39859 was immobilized onto small cubes of wood to produce ethanol and very enriched fructose syrup from glucose/fructose mixtures through the selective fermentation of glucose. A maximum ethanol productivity of 21.9 g/l-h was attained from a feed containing 9.7% (w/v) glucose and 9.9% (w/v) fructose. An ethanol concentration, glucose conversion and fructose yield of 29.6 g/l, 62% and 99% were obtained, respectively. This resulted in a final fructose/glucose ratio of 2.7. At lower ethanol productivity levels the fructose/glucose ratio increases, as does the ethanol concentration in the effluent. The addition of 30 mg/l oleic acid to the medium increased the ethanol productivity and its concentration by 13% at a dilution rate of 0.74 h-1.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150412
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  • 53
    Digitale Medien
    Digitale Medien
    ACS symposium series 516: Biocatalyst design for stability and specificity. Washington, DC: American Chemical Society 335 pages, $ 89.95, ISBN 0-8412-2518-4 (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 232-232 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Abstracts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150213
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  • 54
    Digitale Medien
    Digitale Medien
    The effects of xylanase type enzymes on the different layers of birch wood ORGANOSOLV pulp fibre walls (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 199-209 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Some effects of the xylanase treatment on the separate birch ORGANOSOLV pulp fibre wall morphological layers were examined. These investigations were focused on the outer layers, i.e. the primary wall (P) and the outer layer of the secondary wall (S1), as well as the central layers, i.e. the central layer of the secondary wall (S2) and the tertiary wall (T). Step by step, the fractionation of the pulp components in the polar solvents N,N-dimethylformamide (DMFA), dimethylsulphoxide (DMSO) and DMSO/H3PO4 was used as a mild technique for the isolation of the lignin-carbohydrate complexes. The different residual amounts of lignin and hemicelluloses in the outer and central pulp fibre wall layers as well as the different lignin-hemicellulose ratios were determined. The size-exclusion chromatographical (SEC) analysis showed a higher initial lignin content in the region of the high molecular mass (MM) fibre wall fraction extracted with “DMSO/H3PO4” than the outer cell wall layers. In the central layers, the amounts of soluble lignin (calculated on the mass of total dissolved substance) were approximately the same for all the three solvents.The xylanase treatment brought the most considerable changes in the high MM part of the residual lignin (the lignin carbohydrate complex). This was true for both the P-S1 and S2-T layers. The careful brightness comparison of the outer and central fractions after the X-E-P-P bleaching sequence showed a surprisingly low bleachability of the outer layer fraction. The xylanase action depended on the composition of the lignin-carbohydrate complex (LCC) and the extent of the maintenance of the outer layers during the pulping process.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150209
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  • 55
    Digitale Medien
    Digitale Medien
    Characterization of casein peptones by HPLC profiles and microbiological growth parameters (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 223-231 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Thirty six pancreatic casein peptones from various producers were analyzed by HPLC and by microbiological growth tests. The data were compared by using the principal coordinate analysis and simple mathematical tests. The Proteose peptone quotient, PQ1, determined by the growth of Escherichia coli, separated these casein peptones into three groups, depending on their suitability as nutrients compared to Proteose peptone as a standard. These groups corresponded to the HPLC patterns, characterized by the specific peaks of polypeptides, peptides and amino acids, respectively. The peaks of the high-molecular weight polypeptides were negatively correlated with the growth parameters. The peptides of a low molecular weight promoted the growth of Staphylococcus aureus with and without the exhaustion of usable N compounds and in the presence and absence of glucose (PQ2 and PQ3). The colony sizes correlated weakly with certain peaks only. HPLC patterns, thus, seem to be useful for the characterization of casein peptones for the standardization of nutrient media as well as for special applications.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150212
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  • 56
    Digitale Medien
    Digitale Medien
    Production of α-glucosidase by Bacillus sp. strains (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 233-240 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: α-Glucosidase was detected in four wild-type amylolytic strains belonging to the Bacillus genus. The strains showed α-glucosidase activity in extracellular and membrane-bound fractions. Kinitic studies of the α-glucosidase synthesis in the batch cultures of four strains of the Bacillus genus showed two profiles: partially and totally growth-linked synthesis.The presence of different activities and production profiles of α-glucosidase in the strains at high or low glucose concentrations in the medium would indicate that α-glucosidase may have a role in the regulation of the metabolism of α-polysaccharides.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150214
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  • 57
    Digitale Medien
    Digitale Medien
    Masthead (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995) 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150301
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  • 58
    Digitale Medien
    Digitale Medien
    Production of rifamycin B and SV by free and immobilized cells of Amycolatopsis mediterranei (1995)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 15 (1995), S. 241-248 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The effect of growth conditions (incubation time, inoculum size, initial pH value) and some nutrient concentrations on the growth and rifamycin B and SV production by free and immobilized cells of Amycolatopsis mediterranei CBS 42 575 was studied. In alginate beads, the immobilized cells behaved like the free cells, but a pronounced difference was observed in antibiotic production and cell growth. The rifamycin production by the immobilized cells was higher than that obtained by the free cells. The immobilized cells were also reused repeatedly for six batch cultivations with a fresh medium charged into flasks at the beginning of each batch. It was found that the immobilized cells were stable, and the rifamycin yield was almost constant during the first three batches and then decreased.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370150215
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  • 59
    Digitale Medien
    Digitale Medien
    Application of UASB-reactors to industrial waste-water treatment; performance data and results in granulation control (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 409-418 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Several types of high organic matter pollutants containing (COD-range: 3-50 kg · m-3) industrial waste waters were treated in laboratory scale (1.2-23 dm3) sludge blanket (UASB) and UASB-fixed bed hybrid (UBF) reactors. In most cases higher than 80% of COD-removal efficiency has been attained. The CO2 content of the biogas developed was mainly influenced by the neutralization (base to acid) ratio related to feed pH.Cell immobilization by granule formation was considered as a change in microbial population: enrichment and aggregate formation of Methanotrix-like filamentous microorganisms. Based on physiological and physical indexes of microbial selection and with regard to the different sensitivities of microorganisms to substrate inhibition, a new start-up method was developed for rapid (40-45 days) granulation of raw digested sludge.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110502
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  • 60
    Digitale Medien
    Digitale Medien
    Mikrobiologie. Jena: Gustav Fischer Verlag, 1990., 497 pp., 211 fig., 31 tab., DM 38.80, ISBN 3-334-00236-5. (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 448-448 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110508
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  • 61
    Digitale Medien
    Digitale Medien
    Microorganisms for lipids (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 429-438 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Micro-organisms have often been considered for the production of oils and fats as an alternative to agricultural commodities. However, with the continuing low cost of agricultural production of oil-seeds, biotechnology has little to offer in the way of competition against such items as soybean oil, groundnut oil, and even polyunsaturated oil such as sunflower oil even though good facsimiles of these oils could be produced. It is now clear that if we are to use microorganisms to produce lipids, i.e. Single Cell Oil, then these must be highly specific ones which are currently expensive to obtain from agricultural sources. In particular, the possible production of a cocoa-butter substitute using mutated yeast cells is reviewed here as well as the production of highly polyunsaturated fatty acids (PUFAs) using various species of mould. With regard to producing a cocoa-butter equivalent fat, it is necessary to identify not only a cheap carbon source on which the yeast may grow (this is now considered likely to be lactose arising from whey) as well as deriving a mutant strain of the yeast which will accumulate large amounts of stearic acid within the oil. The recent work carried out in The Netherlands and New Zealand to achieve these goals is described. With regard to polyunsaturated fatty acid production, various prospects exist and indeed, the commercial production of one acid, gamma-linolenic acid, is now being produced commercially in both the U.K. and Japan. The background work leading to this product is described and opportunities for other PUFAs being produced biotechnologically are discussed.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110506
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  • 62
    Digitale Medien
    Digitale Medien
    Studies of the root nodules of leguminous plants IV: Production of indole acetic acid by a bradyrhizobium sp. from the root nodules of a leguminous shrub, crotalaria retusa L (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 439-447 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Bradyrhizobium sp. isolated from the root nodules of a leguminous shrub, Crotalaria retusa L., produced a high amount of indole acetic acid (IAA) from tryptophan in the culture. The bacteria preferred D-isomer to the DL- or L-isomer of tryptophan for the IAA production. The IAA production could be increased up to 153.6% over control by supplementing the medium with arabinose (0.5%), ZnSO4(0.01 μg/ml), KNO3 (0.1%), thiamine-HCl (0.01 μg/ml) and EDTA (5 μg/ml).The possible role of the rhizobial production of IAA with the rhizobia-legume symbiosis is discussed.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110507
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  • 63
    Digitale Medien
    Digitale Medien
    Biotechnological aspects of antibody production in E. coli (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 449-456 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The production of genetically engineered antibodies in Escherichia coli is now possible. The resulting fragments are completely functional and have antigen binding constants industinguishable from the natural antibody. This article summarizes the biochemical basis of this newly developed technology and the properties of the resulting fragments. It is likely that this technology will have an important role in antibody production for technical, medical and research uses. Screening of E. coli libraries may mount a challenge to traditional antibody production methods.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110509
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  • 64
    Digitale Medien
    Digitale Medien
    Genetik. München, Wien: Carl Hauser Verlag, 1988. 843 pp., DM 70,-, ISBN 3-446-14663-6 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 37-37 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110110
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  • 65
    Digitale Medien
    Digitale Medien
    Concise encyclopedia biochemistry. Berlin, New York: Walter de Gruyter, 1988. 649 pp. DM 148,-, $ 89,90, ISBN 3-11-011625- 1 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 38-38 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110111
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  • 66
    Digitale Medien
    Digitale Medien
    Verzeichnis von Informationsmitteln zu Grundlagen-und Anwendungsgebieten der Biotechnologie. Berlin: Akad. Wiss., Wiss. Informationszentrum, 1989. - 137 pp. (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 38-38 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110112
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  • 67
    Digitale Medien
    Digitale Medien
    DECHEMA Monographien: Vol. 120. Instationary Processes and Dynamic Experimental Methods in Catalysis, Electrochemistry and Corrosion Paper of the 27th Tutzing Symposium, March 6-9, 1989. Weinheim: VCH Verlagsgesellschaft, 1989. 470 pp., DM 229,- ISBN 3-527-10212-4 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 48-48 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110114
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  • 68
    Digitale Medien
    Digitale Medien
    Purification and characterization of chorismate mutase isoenzymes from ruta graveolens l. (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 39-48 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Two isoenzymes of chorismate mutase (EC 5.4.99.5), designated as CM-1 and CM-2, were isolated and partially purified from suspension-cultured cells of Ruta gravelens by DEAE-sephacel chromatography and gel filtration. 60-72% of the total activity measured after DEAE-sephacel chromatography were obtained as CM-1 and 28-40% were CM-2 activity. CM-1 was inhibited by phenylalanine (K1 = 4 · 10-6 M) and tyrosine (K1 = 8. 10-6M) and activated by tryptophan. In contrast, CM-2 was not influenced by these three amino acids. The molecular weights estimated by gel filtration on SEPHADEX G-150 were 56000 for CM-1 and 45000 for CM-2, respectively. Both isoenzymes were stable at -20°C, but exhibited different behaviour during thermal inactivation and different optima of reaction temperature. CM-1 catalysed the reaction at a pH optimum of pH 7.8 and CM-2 showed a broad optimum between 6-10. The Km-values for chorismic acid were determined to be 1.1 mM for CM-1 and 0.5 mM for CM-2. The isoenzymes showed different behaviour to inhibitors of sulfhydryl groups. There were no differences in all parameters of chorismate mutase examined for two various cell lines of Ruta graveolens.
    Zusätzliches Material: 8 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110113
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  • 69
    Digitale Medien
    Digitale Medien
    The release of genetically-engineered microorganisms. London: Academic Press Limited, 1988. 306 pp., £ 15.95 ISBN 0-12-677521-4 (c), ISBN 0-12-677522-2 (p/b) (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 56-56 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110116
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  • 70
    Digitale Medien
    Digitale Medien
    D-Glucose Isomerization using an Immobilized Glucose Isomerase preparation from Streptomyces Thermovulgaris Strain 127 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 49-55 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The kinetics of D-glucose isomerization to D-fructose by an original whole-cell immobilized biocatalyst preparation based on Streptomyces thermovulgaris (strain 127) have been studied under various process conditions, substrate concentration, particle size. Two versions of different activity were applied. For the biocatalyst of moderate activity the kinetic constants in the MICHAELIS -MENTEN equation for reversible reaction were determined. Effectiveness factors for both preparations were calculated and compared with other reported data.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110115
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  • 71
    Digitale Medien
    Digitale Medien
    The nad-dependent alcohol dehydrogenase of methylotrophic yeasts - an electrophoretic study (i) (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 57-62 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The occurence of multiple forms of alcohol dehydrogenase (ADH) in methylotrophic yeasts is known from the literture. But no systematic work has been done to characterize these enzymes in detail. The aim of this work was to establish a suitable electrophoretic method for visualization of the ADH-patterns of these organisms. It was found that the recovery of the enzyme activity during polyacrylamide gel electrophoresis (PAGE) depends on the composition of the gel buffer. The ADH of five different methylotrophic yeasts from the genera Candida, Pichia and Hansenula were analyzed. Every investigated organism shows rather complex ADH-patterns.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110117
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  • 72
    Digitale Medien
    Digitale Medien
    Yeast genetic engineering. Boston, London, Singapore, Sydney, Toronto, Wellington: Butterworth, 1989. 354 pp., £ 55.00, ISBN 0-409-90117-2 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 72-72 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110120
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  • 73
    Digitale Medien
    Digitale Medien
    Glucose influenced degradation of α-santonin in pseudomonas sp. strain S (ATCC 43388) (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 67-71 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Pseudomonas sp., strain S ATCC 43 388 utilizes α-santonin by inducible enzyme system measurable by oxygen uptake. Cells grown on acetate or benzoate show negligible oxygen consumption with α-santonin. However, glucose grown cells show evidence of a rapid induction of santonin utilizing enzyme system indicating the implication of glucose or its metabolites in the regulation of degradation of santonin. As a consequence, growth of strain S on mixtures of glucose and α-santonin occurs at rates higher than on either of the substrates alone. Mutants with lesion in the glucose metabolism, independent of α-santonin degradation, fail to exhibit higher growth rates with the binary substrates. The results infer simultaneous metabolism of substrates.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110119
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  • 74
    Digitale Medien
    Digitale Medien
    Biosynthesis of dehydroaltenusin by talaromyces flavus (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 73-76 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: A new metabolite, identical with dehydroaltenusin was isolated from a strain Talaromyces flavus B 5 which was selected from parental strain 51 C/I. Metabolite inhibited the growth of wooddamaging fungi, especially Ciadosporium sphaerospermum and P388 leukemid cells.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110121
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  • 75
    Digitale Medien
    Digitale Medien
    Applied biosensors. Boston, London, Singapore, Sydney, Toronto, Wellington: Butterworths, 1989. 354 pp., £ 55.00, ISBN 0-409-90118-0 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 80-80 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110123
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  • 76
    Digitale Medien
    Digitale Medien
    On the inhibition of laccase by lower fatty acids (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 81-83 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Laccase (E.C. 1.10.3.2) is slowly inhibited by lower fatty acids in a reversible reaction. The degree of inhibition depends on kind and concentration of the fatty acid, but not on the concentration of the enzyme itself. The degree of inhibition increases with the chain length of the fatty acids. The maximum inhibition was found with butyric acid.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110124
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  • 77
    Digitale Medien
    Digitale Medien
    Features of aspergillus japonicus cellobiase formation and optimization of its production (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 147-157 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: We studied some mechanisms of cellobiase formation in Asp. Japonicus VKM F-2092 aiming at the subsequent development of controlled cultivation to produce the enzyme.Formation of cellobiase was found to be of noninducible constitutive character. The enzyme was predominantly localized in the cytosole and the periplasm, its minor portion being cell-wall bound.The release of the enzyme into the medium was due to autolytic processes.The two-phaseness of cellobiase formation in Asp. Japonicus grown on a mineral medium with 0.5% glucose was shown to be determined by the following mechanisms: 1Catabolic repression. We established glucose concentrations causing the repression and found it to be dependent on carbon sources in the growth medium.2Catabolic inhibition. Cellobiase activity was found to be inhibited by assumed glucose metabolites in the presence of nitrate nitrogen in the medium..Practical recommendations to optimize the process of cellobiase production by Asp. Japonicus are given.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110215
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  • 78
    Digitale Medien
    Digitale Medien
    Mathematik der Selbstorganisation. Qualitative Theorie nichtlinearer dynamischer Systeme und gleichgewichtsferner Strukturen in Physik, Chemie und Biologie, Berlin: Deutscher Verlag der Wissenschaften, 1989., 336 S., 149 Abb., DM 49, -, ISBN 3-326-00384-6 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 158-158 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110216
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  • 79
    Digitale Medien
    Digitale Medien
    Single cell oil. Harlow: Longman Group, 1988, New York: John Wiley & Sons, 1988. 165 S., £ 21.00, ISBN 0-582-98900-0 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 168-168 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110218
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  • 80
    Digitale Medien
    Digitale Medien
    Wer - Was - Wo in Biowisseschaften, Biotechnologie und Gentechnologie im Gebiet der DDR. (Who - What - Where, in Biosciences, Biotechnology and Genetic Engineering in the GDR). Frankfurt a. M.: DECHEMA Deutsche Gesellschaft für Chemisches Apparatewesen, Chemische Technik und Biotechnologie e. V., 1990. 159 pp. (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 184-184 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110225
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  • 81
    Digitale Medien
    Digitale Medien
    Masthead (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991) 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110301
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  • 82
    Digitale Medien
    Digitale Medien
    Chemical and microbiological solubilization of silicates (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 187-196 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The solubilization of silicates was investigated using kaolin and quartz sand as model substances. The mineral solubilization was studied in the concentration of solubilized Si and Al. The chemical leaching of the silicates was carried out using inorganic and organic acids as well as sodium hydroxide. The process was more effective in the alkine than in the acid pH range. In the acid medium, oxalic acid showed maximum acidity and a tendency to form complex structures, especially with aluminium, and was most effective in leaching.The microbiological influence on solubilization reactions was tested using a number of microorganisms among them acid, alkali and slime-forming species. The highest leaching activity was observed in the case of Thiobacillus thiooxidans, whereas the heterotrophic microorganisms (among them Bacillus mucilaginosus) did not exercise a sollubilizing effect on the silicates.X-ray phase analysis of leached kaolin samples did not show any differences from the non-leached mineral.
    Zusätzliches Material: 14 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110302
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  • 83
    Digitale Medien
    Digitale Medien
    Atp-Dependent gold accumulation by living chlorella cells (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 197-203 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: An effect of the Au(III) energy dependent concentration has been discovered by living Chlorella cells. The process is most intensive within the alkaline interval of pH, fading away in the dark, and is suppressed in the presence of arsenate (C ≧ 1 μM), fluorides (C ≧ 0.01 mM), sodium azide (1 mM), DCCD (10 μM), 2, 4-dinitrophenol (0.1 mM). In the dark the process is stimulated by ATP (but not by ADP, or AMP). ATP also neutralizes NaN3 effect, but not that of DNP. An energy dependent Au(III) concentration is also observed for other green, blue-green, and, red singlecell algae.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110303
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  • 84
    Digitale Medien
    Digitale Medien
    Elektronenmikroskopische Methodik in der Zell- und Molekularbiog. Ein kritischer Leitfaden zur biologischen Ultrastrukturforschung für Biologen und Mediziner. Stuttgart, New York: Gustav Fischer Verlag, 1987, 335 S., 90 Abb., 23Tab., DM 68,-, ISBN 3-437-30494-1 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 204-204 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110304
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  • 85
    Digitale Medien
    Digitale Medien
    Phytic acid content reduction in canola meal by various microorganisms in a solid state fermentation process (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 211-218 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Solid state fermentation of canola meal has been carried out for the reduction of its phytic acid content using the following microorganisms: Rhizopus oligosporus NRRL 2990, Aspergillus niger NRC 5765 and NRC 401 121, Aspergillus ficuum NRRL 3135 and a wild Saccharomyces cerevisiae strain.The results showed that all these microorganisms can be used for the reduction of the phytic acid content in the tested material. A. ficuum which completely hydrolyzed the phytic acid in 48 hours was the most efficient.Buffered systems, aeration and an increase in inoculum concentration caused faster and higher reduction of phytic acid content in canola meal.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110306
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  • 86
    Digitale Medien
    Digitale Medien
    Biocatalysis and biomimetics. ACS Symposium Series 0097-6156; 392, Washington: D. C. American Chemical Society, 1989. 169 pp., 67 fig., 16 tab., $ 47.95, ISBN 0-8412-1611-8 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 240-240 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110313
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  • 87
    Digitale Medien
    Digitale Medien
    Synergistic cooperation of cellulases of trichoderma reesei as distinguished by a new filter-paper destruction assay (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 359-365 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: WHATMAN 1 CHR filter paper manufactured from macerated cotton fibers was shown to be a soft substrate when broken down by purified cellulases of Trichoderma reesei (CELLUCLAST). Destruction of filter-paper disks was induced by CBH I/1, CBH I/2, CBH II/1, CBH II/2, and EG I in a macroscopic assay. Attack on disks by mixtures of these cellulases (CBH I/1 or CBH I/2 mixed with CBH II/1, CBH II/2, or with EGJ) were followed by synergistically enhanced destructions.SCHLEICHER &SCHUELL filter paper No 595 was shown to be a harder substrate of enzymatical decomposition when induced by cellulases of CELLUCLAST. None of the cellulases could induce macroscopic destruction of filter-paper disks when acting in isolation. However, mixtures of isolated exo and endo-glucanases (CBH I/1 or CBH I/2 mixed with CBH II/1, CBH II/2, or EG I) caused powerful destruction of filter-paper disks.SCHLEICHER &SCHUELL filter paper No 595 incubated first with an endo-glucanase (CBH II/1, CBH II/2, EG I) and treated in a secondary incubation with an exo-glucanase (CBH I/1, CBH I/2) were destroyed to a greater extent than with incubations executed in the reverse order. Results confirm the endo exo concept of explaining cellulose decomposition.The filter-paper destruction assay was performed with filter-paper disks prepared with an office punch. Disks were incubated in 1 ml EPPENDORF reaction tubes filled up beforehand with 0.4 or 0.5 ml of enzyme solution. The degree of synergism of cellulases resulted from the assay in the range of 300 to 1 300 p.c.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110412
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  • 88
    Digitale Medien
    Digitale Medien
    Bioprocess and engineering. Advances in biochemical engineering/biotechnology, Vol. 40. Berlin: Akademie Verlag, 1989, 169 pp., 55 fig., 24 tab., DM 128.-, ISBN 3-05-500803-0 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 428-428 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110505
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  • 89
    Digitale Medien
    Digitale Medien
    Affinity chromatography of 1,4-β-glucosidase from trichoderma reesei QM 9414 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 485-494 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The separation and purification method of extracellular cellobiase and aryl-β-glucosidase from Trichoderma reesei by means of affinity chromatography on controlled porosity glass activated by ι-aminopropyltriethoxysilane and oxiranes are described.
    Zusätzliches Material: 7 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110514
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  • 90
    Digitale Medien
    Digitale Medien
    Gen-technologische arbeitsmethoden. Berlin: Akademie-Verlag, 1990. 232 S., DM 48.-, ISBN 3-05-500641-0 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 500-500 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110516
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  • 91
    Digitale Medien
    Digitale Medien
    Masthead (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991) 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110101
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  • 92
    Digitale Medien
    Digitale Medien
    Contributions to the biotechnological production of sweeteners from stevia rebaudiana bertoni. II. Induction of stevioside accumulation in cell cultures by variation of the nutrient medium and the analysis of small amounts of stevioside (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 501-504 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Cell cultures of Stevia rebaudiana in general do not contain stevioside when grown on their basal nutrient medium. No stable and prolonged stevioside accumulation was achieved by varying the medium components. However, in some cases a transient state was observed where more stevioside was synthesized than catabolized. The dynamic behaviour of product synthesis which led to accumulation of stevioside during only a short period was demonstrated. For accurate determination of very small amounts of stevioside, a combined TLC-HPLC method was used [1].
    Zusätzliches Material: 1 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110517
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  • 93
    Digitale Medien
    Digitale Medien
    Masthead (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991) 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110601
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  • 94
    Digitale Medien
    Digitale Medien
    Bio technologie. Das Jahr- und Adreßbuch 89/90. Braunschweig: Polycom Verlagsges. mbH, 1989., 319 S., DM 39.80, ISBN 3-9801406-0-1 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 520-520 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110521
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  • 95
    Digitale Medien
    Digitale Medien
    Characterization of biotechnological processes and products using high-performance liquid chromatography (H P L C). VII. Determination of organic compounds in sulphite liquor (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 511-519 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Carbohydrates, acetic acid, furfural, 5-hydroxymethylfurfural (HMF) were analyzed in sulphite liquor using HPLC with refractive index detection.Pentoses (xylose, arabinose) and hexoses (glucose, galactose, mannose) were separated on an Aminex HPX-87P column as wel as by means of a self-made glass cartridge packed with a piperazine impregnated silica gel. Before injecting into the HPLC apparatus the sulphite liquors were purified using a presep column packed with a cation-exchange resin. The sugar quantification between the two different separation systems was satisfactory.Using an Aminex HPX-87P column and an UV monitor set at 283 nm connected in parallel with the RI detector also furfural and HMF could be analyzed in sulphite liquor.Furthermore, an Aminex HPX-87H column and an UV detector set at 210 nm were most suitable to quantify ethanol.These modified and optimized liquid chromatographic separation systems are the basis for further investigations of the utilization of hexoses as well as pentoses in sulphite liquors by means of suitable microorganisms.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110520
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  • 96
    Digitale Medien
    Digitale Medien
    Bioinstrumentation. Research, developments and applications. Boston, London, Singapore, Sydney, Toronto, Wellington: Buttenvorth 1990. 1563 pp., £ 124.00, ISBN 0-409-90234-9 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 532-532 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110603
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  • 97
    Digitale Medien
    Digitale Medien
    Formation of ethanol and higher alcohols by immobilized zymomonas mobilis in continuous culture (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 523-532 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Cells of Zymomonas mobilis ATCC 10988 were immobilized in 1.5% calcium alginate and packed in a column bioreactor for a series of fermentations utilizing 10.0% glucose media with the addition of one of the following amino acids or keto acids: L-leucine, L-isoleucine, L-valine, α-ketoisocaproic acid, α-ketobutyric acid, or α-ketoisovaleric acid. This was done in order to study the rates of production of higher alcohols during ethanolic fermentations at varying dilution rates while under the influence of amino acids or keto acids.Results indicate that the EHRLICH mechanism is operative in Zymomonas sp. α-Ketobutyrate enhanced the production of n-propanol and act-amyl alcohol. α-Ketoisocaproic acid stimulated the production of isoamyl alcohol. α-Ketoisovaleric acid increased the levels of isobutanol. The amino acids also gave rise to their corresponding alcohols but to a far lesser degree than did the keto acids. During high glucose utilization, ethanol yields ranged from 87% to 94% of theoretical with productivity ranging from 60.08 g/l/h in one fermentation (at a dilution rate of 1.35 h-1) to 70.42 g/l/h in another (at a dilution rate of 1.58 h-1). At dilution rates of 1.58 h-1, higher alcohol productivity rose to as high as 4,313 mg/l/h in the presence of α-ketoisocaproic acid, 1,734.49 mg/l/h using α-ketoisovaleric acid, and 1,618.05 mg/l/h in α-ketobutyric acid. The concomitant production of ethanol and higher alcohols in all of the fermentations indicates that glucose is required for the production of the higher alcohols from their corresponding amino acids or keto acids.
    Zusätzliches Material: 4 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110602
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  • 98
    Digitale Medien
    Digitale Medien
    Isolation and utilization of indigenous yeast strain for brewing of millet beer (OYOKPO) (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 31-37 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Three yeast strains were isolated from a spontaneously fermented native millet (Pennisetum typhoideum) malt beer (Oyokpo). One of the yeast isolates found to have the most highly fermenting capacity was characterised and identified as a strain of Saccharomyces cerevisiae. The yeast was then utilised as the pitching yeast in a subsequent controlled fermentation of millet wort at 20°C for 120 hours. Bitter leaf (Vernonia amagdalina) extract was used as the bittering and flavouring agent. The Oyokpo beer sample produced under these conditions was found to possess both chemical and organoleptic qualities comparable to some extent, to the conventional barley malt beer. At the end of fermentation, the pH, specific gravity, alcohol content, reducing sugar content and protein content of the beer were 4.11, 1.0308, 2.81% (v/v), 4.00 (mg/ml) and 0.84 (mg/ml) respectively.
    Zusätzliches Material: 3 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110109
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  • 99
    Digitale Medien
    Digitale Medien
    Laboratory glass fermenter on the basis of the airlift principle (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 553-558 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: A 1.5-1 minifermenter consisting of RASOTHERM glass on the basis of the airlift principle was constructed and tested in the Institute of Biotechnology.The development of this fermenter bridged the gap between shake flasks and lab-scale fermenters and provided a possibility for the continuous cultivation of extremely halophilic bacteria. It was demonstrated that the fermenter can be used for cultivating bacteria that are sensitive to shear stress. It can also be recommended for purposes of cultivation of plant and animal cells because of this advantage and the possibility of this fermenter to be sterilized.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110610
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  • 100
    Digitale Medien
    Digitale Medien
    Biotransformations of industrial usePresented at the 5th Leipziger Biotechnologie-Symposium, December 10-13, 1990. (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 559-570 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Biotransformations represent a useful tool for the production of various chemical compounds because of their main advantages: attack of non-activated positions, regio, stereo and enantio-selectivity, and the mild reaction conditions.Organic chemistry can use these advantages in various enzymatic type reactions.One of the most interesting and promising groups of these biotransformations are the various oxidative reactions.The following article intends to give a short insight in the present state of this part of the broad field of biotransformations.Examples of technically interesting processes, preferably results of newer developments, should illustrate athe variety of enzymatical oxidative reactions used.bthe various structures of educts for aimed oxidative modifications and.cthe application in the pharmaceutical, food and chemical industries.
    Zusätzliches Material: 13 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370110612
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