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  • 1
    Electronic Resource
    Electronic Resource
    In situ distribution of EcoRI methylase and restriction endonuclease in cells of Escherichia coli Bs 5
    Amsterdam : Elsevier
    FEBS Letters 216 (1987), S. 207-210 
    Details
    ISSN: 0014-5793
    Keywords: EcoRI methylase ; EcoRI restriction endonuclease ; Immunoelectron microscopy ; Low-temperature embedding ; Protein A-gold labeling
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0014-5793(87)80690-7
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Studies on a new disease in a natural population of migratory locusts, Locusta migratoria, caused by an entomopoxvirus
    Amsterdam : Elsevier
    Journal of Invertebrate Pathology 51 (1988), S. 284-286 
    Details
    ISSN: 0022-2011
    Keywords: Entomopoxvirus ; Migratory locusts, Locusta migratoria ; natural infection
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0022-2011(88)90037-7
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Enhanced hydrogen production from aromatic acids by immobilized cells of Rhodopseudomonas palustris (1995)
    Springer
    Applied microbiology and biotechnology 44 (1995), S. 43-46 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Cells of the purple non-sulphur bacterium Rhodopseudomonas palustris DSM 131 were immobilized in agar, agarose, κ-carrageenan or sodium alginate gel. With alginate beads, prepared by an emulsion technique, and an optimal cell load of 10 mg dry weight/ml gel, the hydrogen production from aromatic acids was doubled as compared to that resulting from liquid cultures. Hydrogen yields of 60%, 57%, 86% or 88% of the maximal theoretical value were obtained from mandelate, benzoylformate, cinnamate or benzoate respectively. Benzoate concentrations above 16.5 mM were inhibitory. During a period of 55 days the process of hydrogen evolution with immobilized cells was repeated in five cycles with slowly decreasing efficiency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00164478
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Hydrogen production from aromatic acids byRhodopseudomonas palustris (1994)
    Springer
    Applied microbiology and biotechnology 41 (1994), S. 395-399 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The capability of five strains of the phototrophic bacteriumRhodopseudomonas palustris to produce molecular hydrogen (H2) from the aromatic acids benzoate,p-hydroxybenzoate, cinnamate and D- and L-mandelate was investigated. Optimal H2 production was achieved when the strains were grown anaerobically in the light at 10,000 lx under nitrogen (N) limitation using 1 mM L-glutamate as an N source. In the presence of 2 mM benzoate or L-mandelate as carbon and electron sources, strain DSM 131 produced 45% H2 of the maximal theoretical value and strain F2 32%, respectively. Increased H2 production correlated with increased nitrogenase activities, but H2 formation was not further stimulated by inhibition of the H2 uptake (hup) hydrogenase with ethylenediaminetetraacetic acid (EDTA).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01982526
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Hydrogen production from aromatic acids by Rhodopseudomonas palustris (1994)
    Springer
    Applied microbiology and biotechnology 41 (1994), S. 395-399 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The capability of five strains of the phototrophic bacterium Rhodopseudomonas palustris to produce molecular hydrogen (H2) from the aromatic acids benzoate, p–hydroxybenzoate, cinnamate and D- and L-mandelate was investigated. Optimal H2 production was achieved when the strains were grown anaerobically in the light at 10,000 lx under nitrogen (N) limitation using 1 mM L-glutamate as an N source. In the presence of 2 mM benzoate or L-mandelate as carbon and electron sources, strain DSM 131 produced 45% H2 of the maximal theoretical value and strain F2 32%, respectively. Increased H2 production correlated with increased nitrogenase activities, but H2 formation was not further stimulated by inhibition of the H2 uptake (hup) hydrogenase with ethylenediaminetetraacetic acid (EDTA).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01982526
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Hydrogen production from aromatic acids byRhodopseudomonas palustris (1994)
    Springer
    Applied microbiology and biotechnology 41 (1994), S. 395-399 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The capability of five strains of the phototrophic bacteriumRhodopseudomonas palustris to produce molecular hydrogen (H2) from the aromatic acids benzoate,p-hydroxybenzoate, cinnamate and D- and L-mandelate was investigated. Optimal H2 production was achieved when the strains were grown anaerobically in the light at 10,000 lx under nitrogen (N) limitation using 1 mM L-glutamate as an N source. In the presence of 2 mM benzoate or L-mandelate as carbon and electron sources, strain DSM 131 produced 45% H2 of the maximal theoretical value and strain F2 32%, respectively. Increased H2 production correlated with increased nitrogenase activities, but H2 formation was not further stimulated by inhibition of the H2 uptake (hup) hydrogenase with ethylenediaminetetraacetic acid (EDTA).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00939026
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Enhanced hydrogen production from aromatic acids by immobilized cells of Rhodopseudomonas palustris (1995)
    Springer
    Applied microbiology and biotechnology 44 (1995), S. 43-46 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract  Cells of the purple non-sulphur bacterium Rhodopseudomonas palustris DSM 131 were immobilized in agar, agarose, κ-carrageenan or sodium alginate gel. With alginate beads, prepared by an emulsion technique, and an optimal cell load of 10mg dry weight/ml gel, the hydrogen production from aromatic acids was doubled as compared to that resulting from liquid cultures. Hydrogen yields of 60%, 57%, 86% or 88% of the maximal theoretical value were obtained from mandelate, benzoylformate, cinnamate or benzoate respectively. Benzoate concentrations above 16.5 mM were inhibitory. During a period of 55 days the process of hydrogen evolution with immobilized cells was repeated in five cycles with slowly decreasing efficiency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530050517
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Production, purification and characterization of glucose oxidase from a newly isolated strain of Penicillium pinophilum (1997)
    Springer
    Applied microbiology and biotechnology 48 (1997), S. 34-40 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract A number of nutritional factors influencing growth and glucose oxidase (EC 1.1.3.4) production by a newly isolated strain of Penicillium pinophilum were investigated. The most important factors for glucose oxidase production were the use of sucrose as the carbon source, and growth of the fungus at non-optimal pH 6.5. The enzyme was purified to apparent homogeneity with a yield of 74%, including an efficient extraction step of the mycelium mass at pH 3.0, cation-exchange chromatography and gel filtration. The relative molecular mass (M r) of native glucose oxidase was determined to be 154 700 ± 4970, and 77 700 for the denatured subunit. Electron-microscopic examinations revealed a sandwich-shaped dimeric molecule with subunit dimensions of 5.0 × 8.0 nm. Glucose oxidase is a glycoprotein that contains tightly bound FAD with an estimated stoichiometry of 1.76 mol/mol enzyme. The enzyme is specific for d-glucose, for which a K m value of 6.2 mM was determined. The pH optimum was determined in the range pH 4.0–6.0. Glucose oxidase showed high stability on storage in sodium citrate (pH 5.0) and in potassium phosphate (pH 6.0), each 100 mM. The half-life of the activity was considerably more than 305 days at 4 °C and 30 °C, and 213 days at 40 °C. The enzyme was unstable at temperatures above 40 °C in the range pH 2.0–4.0 and at a pH above 7.0.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530051011
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    Paper (German National Licenses)
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