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  • 1
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 22 (1984), S. 0 
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract The strain ‘Acetobacter rancens’ CCM1774 was investigated concerning the occurrence of aldehyde dehydrogenases after growth on different carbon sources. Two constitutive enzyme activities, a NADP+-dependent one and a pyridine nucleotide-independent one, have been detected. The catalytic properties of the latter membrane-bound aldehyde dehydrogenase suggest its participation in the degradation of long-chain n-alkanes.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Carbohydrate Research 206 (1990), S. 13-19 
    ISSN: 0008-6215
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Molecular Structure 219 (1990), S. 353-358 
    ISSN: 0022-2860
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    World journal of microbiology and biotechnology 8 (1992), S. 14-20 
    ISSN: 1573-0972
    Keywords: Candida apicola ; protoplast ; vesicles ; yeast
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The optimal conditions for protoplast formation ofCandida apicola were by using an enzyme fromArthrobacter sp. in combination with 2-mercaptoethanol. The kinetic data support the two-layered structure model of cell wall for this yeast but the structure of the cell wall depended on the age of cells and culture conditions. To regenerate the protoplasts, the type of osmotic stabilizer was important: sorbitol gave 16 to 30% regeneration. Electron microscopy revealed the presence of vesicles in the sections of protoplasts and whole cells ofCandida apicola grown in production medium and producing glycolipids. In sections of whole cells, vesicle-like structures are located in the periplasmic space and in protoplasts they can either be attached to, or released from, the cell surface. These vesicles are thought to be involved in the transport of the surface-active glycolipids and in the protection of the cell against denaturing effects.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Applied microbiology and biotechnology 42 (1994), S. 192-197 
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract  The effect of ammonium on growth of Candida apicola and on production of sophorose lipid was studied. Sophorose lipid production increased with increasing initial ammonium sulphate concentration. Both growth and product formation were strongly reduced at 73.6 mM ammonium. With 58.9 mM ammonium a microcrystalline sophorose lipid was formed. The ratio of the two isomers of the sophorose lipid, harbouring either ω- or ω-1 hydroxy fatty acid, was influenced by the initial concentration of ammonium. Both production kinetics, yields and profiles of the total cellular fatty acids express alterations with enlarged ammonium concentrations. These results suggest regulatory effects of ammonium on C. apicola and its sophorose lipid synthesis.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Applied microbiology and biotechnology 42 (1994), S. 192-197 
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The effect of ammonium on growth ofCandida apicola and on production of sophorose lipid was studied. Sophorose lipid production increased with increasing initial ammonium sulphate concentration. Both growth and product formation were strongly reduced at 73.6mm ammonium. With 58.9mm ammonium a microcrystalline sophorose lipid was formed. The ratio of the two isomers of the sophorose lipid, harbouring either ω- or ω-1 hydroxy fatty acid, was influenced by the initial concentration of ammonium. Both production kinetics, yields and profiles of the total cellular fatty acids express alterations with enlarged ammonium concentrations. These results suggest regulatory effects of ammonium onC. apicola and its sophorose lipid synthesis.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Applied microbiology and biotechnology 26 (1987), S. 199-205 
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary Several Torulopsis yeasts were screened for production of extracellular surface-active compounds. One strain, Torulopsis apicola IMET 43747, was studied in greater detail. Both on nalkanes and on carbohydrates it produced a mixture of water-soluble biosurfactants with remarkable interfacial activities and surface-tension values around 30 mN m-1 and interfacial tension below 1 mN m-1. Most of the biosurfactants are produced in the late exponential and in the early stationary growth phase. Production was increased by using hydrophobic compounds as the carbon source. The yields on n-alkanes were influenced by the concentrations of both the carbon source and the yeast extract. The effects of one purified biosurfactant on microbial growth on nalkanes and its antibacterial and antiphagal activities reveal new physiological aspects of biosurfactant generation by T. apicola.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    European journal of wildlife research 19 (1973), S. 90-98 
    ISSN: 1439-0574
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Summary For the purpose of investigating the movement of free-living foxes, two one year old foxes were equipped with transmitters and released in two large forested areas near Munich. The construction and functioning of the instruments are discussed in detail. The location of the animals was determined with the aid of two yagi antennas, 17 and 6 meters high, and thereafler catalogued. In addition, infra red lighting and relay stations were used to gain information about the use of dens and feeding places. One fox could be followed for five days, and the second for 7. The animals appear to have their rest periods frequently between 9 and 15∶30, and the periods of greatest activity at dawn and dusk. A definite movement to three activity centers was observed.
    Abstract: Résumé Deux renards d'un an munis chacun d'un petit émetteur ont été lâchés dans deux grands massifs forestiers des environs d'Oberpfaffenhofen (près de Munich) afin de suivre le comportement migratoire de l'espèce. Le procédé de construction et le mode d'emploi de l'émetteur sont décrits avec précision. Par triangulation à l'aide d'une antenne stationnaire de 17 m de haut et d'une antenne mobile de 6 m de haut de type 2-m-Yagi, les renards furent repérés et leurs déplacements reportés sur carte. Ce dispositif fut complété par des stations-relais et des détecteurs à infra-rouge permettant la surveillance des lieux de viandis et des terriers des animaux expérimentaux. Un renard put être suivi pendant 5 jours. Le second fut localisé d'heure en heure pendant 7 jours. A cette occasion, ont put se rendre compte que les phases de repos du Renard se concentraient entre 9 h et 15 h 30 et que l'activité maximale se situait à l'aube et au crépuscule. On observa également des déplacements orientés vers trois “centres d'activités biologiques”.
    Notes: Zusammenfassung In zwei größeren Waldstücken in der Nähe von Oberpfaffenhofen (Nähe München) wurden zwei einjährige Füchse, die mit Kleinsendern versehen waren, freigelassen, um eine genaue Registrierung des Wanderverhaltens freilebender Füchse zu erhalten. Konstruktion und Arbeitsweise des Senders werden eingehend beschrieben. Durch Kreuzpeilung mit einer stationären 17 m hohen und einer 6 m hohen, mobilen 2-m-Yagi-Antenne wurde die Lokalisation der Füchse geometrisch ermittelt und anschließend kartographisch festgehalten. Zusätzlich wurden im Versuchsgelände Relaisstationen und Infrarot-Lichtschranken zur Bau- und Futterplatzüberwachung aufgestellt. Ein Fuchs konnte 5 Tage lang verfolgt werden. Der zweite Fuchs wurde 7 Tage “rund um die Uhr” angepeilt. Dabei zeigte sich, daß im Tagesablauf des Fuchses Ruhezeiten (gehäuft zwischen 9 Uhr und 15.30 Uhr) und Zeiten höchster Aktivität in der Morgen- und in der Abenddämmerung festzustellen sind Eine gezielte Wanderrichtung zu drei “biologischen Aktivitätszentren” konnte festgestellt werden.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 7 (1987), S. 353-356 
    ISSN: 0138-4988
    Keywords: Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: A rhamnolipid released by Pseudomonas aeruginosa 196 Aa into the culture medium reduced the number of local lesions induced by tobacco mosaic virus on leaves of the hypersensitive host Nicotiana glutinosa L. by up to 90%. The content of potato virus X in the systemically infected host Nicotiana tabacum L. ‘Samsun’ is decreased in inoculated as well as in secondarily infected leaves by up to 50%. In a smaller degree red clover mottle virus is influenced in the systemic host Pisum sativumconvar.speciosum (Dierb.) Alef ‘Nadja’.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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