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Food Technology and Biotechnology, Vol. 50 No. 4, 2012.

Original scientific paper

Biotechnological Potential of Yarrowia lipolytica Grown under Thiamine Limitation

Svetlana V. Kamzolova orcid id orcid.org/0000-0003-4326-2345 ; G. K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr-t Nauki 5, Pushchino, RU-142290 Moscow Region, Russia
Maria N. Chiglintseva ; Pushchino Branch of Moscow State University, Microdistrict 'V' 25, Pushchino, RU-142290 Moscow Region, Russia
Alsu I. Yusupova ; G. K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr-t Nauki 5, Pushchino, RU-142290 Moscow Region, Russia
Natalia G. Vinokurova ; G. K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr-t Nauki 5, Pushchino, RU-142290 Moscow Region, Russia
Valentina Ya. Lysanskaya ; G. K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr-t Nauki 5, Pushchino, RU-142290 Moscow Region, Russia
Igor G. Morgunov ; G. K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr-t Nauki 5, Pushchino, RU-142290 Moscow Region, Russia

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Abstract

During the cultivation of a thiamine-auxotrophic yeast strain Yarrowia lipolytica VKM Y-2412 on ethanol, the growth limitation by thiamine leads to the production of α-ketoglutaric acid. The α-ketoglutaric acid synthesis has been studied in dependence on pH, oxygen supply and ethanol, zinc and iron concentrations. Under optimal conditions, Y. lipolytica produced 88.7 g/L of α-ketoglutaric acid. The culture broth containing α-ketoglutaric acid was subjected to chemical treatment with hydrogen peroxide, which led to the formation of succinic acid in significant quantities (71.7 g/L). Further direct esterification of succinic acid with excess absolute ethanol yielded diethyl succinate. Biomass of Y. lipolytica, a superproducer of α-ketoglutaric acid, was characterized by a high content of protein and essential amino acids, free amino acids, and unusually large amount of γ-aminobutyric acid. The unique amino acid composition of the producer makes it possible to use this biomass as a component of parenteral nutrition mixtures and as a basis for neuroleptics.

Keywords

microbial production; succinic acid; α-ketoglutaric acid; Yarrowia lipolytica; γ-aminobutyric acid; diethyl succinate

Hrčak ID:

94491

URI

https://hrcak.srce.hr/94491

Publication date:

27.12.2012.

Article data in other languages: croatian

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