凝集泡なし酵母の造成とその性質

概要

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The haploid sake yeast H-2-5-62 strain, tolerant to low temperature, was found to be aggregated and simultaneously to fail to make a froth head in sake mash. We tentatively designated the gene responsible for these two phenotypes AFH1 (aggregated and froth head formin). Using H-2-5-62 as the starting strain, two afh1/afh1 diploid sake yeasts were constructed. The cell surface properties of these strains were similar to those of froth head forming sake yeasts but different from those of conbentional non-foaming sake yeasts. The afh1/afh1 yeasts aggregated in the presence of filter paper cellulose, as do the thick cover forming yeasts. The afh1/afh1 diploids constructed in this study showed adequate alcohol productivity and a high value of sake meter, indicating that they are promising strains for practical use.
社団法人日本生物工学会の論文
1992-05-25