Breeding method of sake yeast that reduces the production of ethyl-α-glucoside

摘要

PROBLEM TO BE SOLVED: To provide a breeding method of sake yeast which reduces ethyl--glucoside in sake in order to produce sake which is easy to drink and has a refreshed taste after drinking.SOLUTION: There are included a resistant strain acquisition step of subjecting sake yeast to mutation treatment to acquire a cycloheximide resistance strain, and a variant selection step of selectively separating a variant which reduces production of ethyl--glucoside from the population of the cycloheximide resistance strain. Sake yeast is Sake yeast Kyokai No. 901, and the mutation treatment is ethyl methanesulfonate treatment.