α-Ketoglutaric acid production by Yarrowia lipolytica and its regulation

Appl Microbiol Biotechnol. 2012 Nov;96(3):783-91. doi: 10.1007/s00253-012-4222-x. Epub 2012 Jun 17.

Abstract

The yeast Yarrowia lipolytica VKM Y-2412 was selected as a prospective producer of α-ketoglutaric acid (KGA) from ethanol. The following peculiarities were found: (1) the intensive KGA production occurred only under the limitation of cell growth by thiamine and the excess of ethanol and nitrogen, (2) the production of KGA from ethanol required increased amount of zinc and iron ions, and (3) KGA production increased significantly with a high aeration at pH medium equal to 3.5. Under optimal conditions, the Y. lipolytica VKM Y-2412 produced up to 172 g l(-1) of KGA with the mass yield coefficient of 0.70 g g(-1).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Ethanol / metabolism
  • Gene Expression Regulation, Fungal*
  • Iron / metabolism
  • Ketoglutaric Acids / metabolism*
  • Metabolic Networks and Pathways / genetics*
  • Nitrogen / metabolism
  • Thiamine / metabolism
  • Yarrowia / genetics*
  • Yarrowia / metabolism*
  • Zinc / metabolism

Substances

  • Ketoglutaric Acids
  • Ethanol
  • Iron
  • Zinc
  • Nitrogen
  • Thiamine