摘要:
A yeast which harbors a mutant glutathione synthetase having one or both of mutations selected from the group consisting of a mutation to replace a threonine residue at the position 47 with an isoleucine residue and a mutation to replace a glycine residue at the 387-position with an aspartic acid residue and produces γ-glutamylcysteine. The yeast is cultured under suitable conditions, the resultant culture or fractionation product thereof or the resultant culture or fractionation product thereof that had been heat-treated is mixed with food or beverage materials and processed into foods or beverage to produce γ-glutamylcysteine- or cysteine-containing foods or beverage.
摘要:
The present invention provides lactic acid bacteria producing Nisin, a method for selecting the same, and foods or feeds using the lactic acid bacteria.
摘要:
The present invention relates to a seasoning and a processed food which are obtained by processing a fermented soybean paste-like foodstuff, and a method of the production thereof.
摘要:
The yeast which has γ-glutamylcysteine-producing ability and is auxotrophic for pantothenic acid is proliferated in a medium containing a sufficient amount of pantothenic acid, and then it is cultured in a medium containing a limited amount of pantothenic acid to increase the γ-glutamylcysteine content in its cells, whereby the yeast in which γ-glutamylcysteine is accumulated is obtained.
摘要:
A gene encoding glutathione synthetase from Candida utilis is provided and food containing γ-glutamylcysteine cysteine or cystenylglycine is produced by cultivating Candida utilis modified by means of a gene encoding glutathione synthetase under a suitable condition and mixing the obtained culture or a fraction thereof or the culture or a fraction thereof subjected to heat treatment with a raw material of food or drink to process food or drink.
摘要:
A gene encoding glutathione synthetase from Candida utilis is provided and food containing γ-glutamylcysteine cysteine or cystenylglycine is produced by cultivating Candida utilis modified by means of a gene encoding glutathione synthetase under a suitable condition and mixing the obtained culture or a fraction thereof or the culture or a fraction thereof subjected to heat treatment with a raw material of food or drink to process food or drink.
摘要:
A yeast extract containing a peptide, such as γ-Glu-X and γ-Glu-X-Gly, wherein X can represent an amino acid or an amino acid derivative other than Cys and derivatives thereof, is prepared by culturing a yeast in a medium containing a peptide such as γ-Glu-X, γ-Glu-X-Gly and X-Gly, and preparing a yeast extract from the obtained cells.
摘要:
Food containing γ-glutamylcysteine or cysteine is produced by culturing Candida utilis containing 1% by weight or more of γ-glutamylcysteine per dry cells in logarithmic growth phase when cultured in a minimal medium, for example, Candida utilis in which a gene encoding glutathione synthetase is modified so that intracellular glutathione synthetase activity is reduced, under a suitable condition and mixing the obtained culture or a fraction thereof or the culture or a fraction thereof subjected to heat treatment with a raw material of food or drink to process food or drink.
摘要:
The present invention relates to a method for the manufacture of a food material containing high quantities of cysteine. In this method, a yeast extract is prepared from yeast cells that contains γ-glutamylcysteine and the extract is concentrated by controlling the temperature to be not greater than 60° C. to prepare a food material in a liquid form, wherein the concentration of solids is at least 10% and the resulting food material is maintained at 70 to 130° C.