Izvorni znanstveni članak
Biotechnological Potential of Yarrowia lipolytica Grown under Thiamine Limitation
Svetlana V. Kamzolova
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
Sažetak
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.
Ključne riječi
microbial production; succinic acid; α-ketoglutaric acid; Yarrowia lipolytica; γ-aminobutyric acid; diethyl succinate
Hrčak ID:
94491
URI
Datum izdavanja:
27.12.2012.
Posjeta: 2.144 *