Abstract
It has been observed that the Acinetobacter calcoaceticus K-4 strain produces surface-active substances (SAS) while growing either on hydrophilic (ethanol) or on hydrophobic substrates (hexadecane). Maximal SAS synthesis (with a conditional SAS concentration of 3.6; emulsifying activity of culture liquid dissolved in 50 times equal to 96%) was detected with growth on an ethanol-containing medium with the addition of urea, yeast autolysate and microelements, C/N ratio 60:1 and 10% inoculate, cultivated on ethanol-containing medium by the end of the exponential phase of growth. With respect to its chemical nature, extracellular SAS synthesized by A. calcoaceticus K-4 growing on ethanol-containing medium under optimal cultivating conditions form a glycolipid-aminolipid complex.
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Original Russian Text © T.P. Pirog, S.I. Antonyuk, Ye.V. Karpenko, T.A. Shevchuk, 2009, published in Prikladnaya Biokhimiya i Mikrobiologiya, 2009, Vol. 45, No. 3, pp. 304–310.
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Pirog, T.P., Antonyuk, S.I., Karpenko, Y.V. et al. The influence of conditions of Acinetobacter calcoaceticus K-4 strain cultivation on surface-active substances synthesis. Appl Biochem Microbiol 45, 272–278 (2009). https://doi.org/10.1134/S0003683809030065
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DOI: https://doi.org/10.1134/S0003683809030065