Decreased hydrogen sulfide formation in beer production

摘要

A recombinant yeast belonging to the genus Saccharomyces having a promoter of a consitutively expressed gene and a structural gene coding for O-acetylhomoserine sulfhydrylase (MET25) under the control by said promoter so that the recombinant yeast produces an amount of hydrogen sulfide lower than the amount of hydrogen sulfide produced by the parental yeast from which the recombinant yeast is derived.