Yeast, yeast extract containing gamma-glu-abu, and a method for producing the same
AssigneeAjinomoto Co., Inc.
InventorsHiroaki Nishiuchi, Misato Morita, Wataru Hoshino, Junko Yamazaki, Takayuki Ito, Kazuo Yamagishi
Life of this patent
Estimating the term…
Abstract
A yeast extract containing 0.2% or more of γ-Glu-Abu based on dry weight of the yeast extract is produced by culturing a yeast, such as Saccharomyces cervisiae or Candida utilis, in a medium containing a compound selected from Abu (L-2-aminobutyric acid) and γ-Glu-Abu (L-γ-glutamyl-L-2-aminobutyric acid), and preparing a yeast extract from the obtained cells.
Claims24
A yeast extract containing 0.2% or more of γ-Glu-Abu based on dry weight of the yeast extract.
A method for producing a yeast extract containing γ-Glu-Abu, which comprises culturing a yeast in a medium to which a compound selected from Abu and γ-Glu-Abu is added, and preparing a yeast extract from the obtained cells.
A yeast having an increased γ-Glu-Abu content, which has been modified so that
- activity of aminotransferase or/and activity of α-ketobutyric acid synthetase are enhanced, and,
- activity of γ-glutamylcysteine synthetase is enhanced, or/and activity of glutathione synthetase is attenuated.
A method for producing a yeast extract containing γ-Glu-Abu, which comprises allowing a γ-glutamyltransferase to act on a yeast extract raw material to which Abu has been added.
Dependencies are inferred from the claim text.