酵母の生産に関する研究 : (第1報)メタノール質化性酵母について

概要

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In the courses of invesigations on yeast production and the microbial metabolism of C_1-compound, the authors isolated many methanol assimilating yeast from natural sources. Among them, the strain No. 2201,which showed a heavy growth on a methanol medium, was selected and characterized according to the standard method of taxonomy as follows; a strain of asporogenous yeasts, with bipolar budding reproduction without forming pseudo- nor true-mycelia with an average size of 2〜3×4.5〜6.8 μ, an oval shape, and the formation of a ring and pellicle in the malt extract medium. The strain assimilated nitrate, ethanol, glucose, fructose, xylose, mannose, glycerol and mannitol and fermented glucose, fructose and xylose. The strain grew well with the pH in the range between 2.5 and 9.0,at 5℃ to 45℃ and required thiamine for the growth. From these results, it seemed that it might be a new strain related to the genus Kloeckera refered to Lodder's taxonomic study, though there were a few differences between them in the assimilation of nitrate and ethanol. The yeast strains preserved in our laboratory other than the genus Kloeckera did not show the growth on a methanol medium.
社団法人日本生物工学会の論文
1970-07-25