酵母菌の變異に關する研究 (第3報) : 胞子形成力を衰退せる酵母菌の再生に就いて

概要

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We studied on verious sporulation media that might be suitable to regenerate the sporulating ability of Saccharomyces sake KIS2 which had degenerated during the preservation of 22 years. Among many sporulation media tested, yeast autolyzate agar (Y agar) was found to be most effective. By repeating the transfer alternately on malt extract-yeast extract agar and Y agar, it attained to a very stable regeneration of the sporulating ability. Besides the sporulating ability, the morphological and physiological characteristics were reversed to those of the original fresh isolate, and the termentation power, dry weight of cells and flavour of the products were also improved in the regenerated strain. Y agar was found to be applicable enough to many other degenerated strains of S. cerevisiae.
公益社団法人日本生物工学会の論文
1955-02-15