酵母製造に關する研究 : エチルアルコールを炭素源とする酵母の培養 (其の2)

概要

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1) Rasse XII and FLEISCHMANN's yeast made a poor growth in every basel medium containing only ethanol an salts, and the yields of both the yeasts were remarkably inferior to those of Torula utilis and the yeast No.110,so that ethanol remained much after the cultivation in these media.2) By adding the Extracts of various natural materials, peptone and asparagine, the ethanol assimilation of Rasse XII and FLEISCHMANN's yeast was accelerated and the yields of these yeasts increased. Paticularly hte extract of radish leaves was most effective for the growth of these yeasts.3) The highest yields of yeasts based on the ethanol added to each basal medium were as follows : Rasse XII : 57.12% (A), 60.24% (B), 32.00% (C) FLEISCHMANN's yeast : 52.92% (A), 60,64% (B), 30.87% (C) ( ) : denotes the kinds of basal media used. They were all obtained in the media supplemented with radish leaves extracts.4) The amout of inoculated yeast had no remarkable effect upon the ethanol assimilation of the yeast No. 110.5) The yields of the four kinds of yeasts on the basis of the added ethanol increased as much as the ethanol concentration of medium decreased, and they reached their maximum at an ethanol concentration of 0.25%. The yields of the yeast No. 110,Trula utilis, Rasse XII and FLEISCHMANN's yeast in the media containing 0.25% ethanol were 67.76%, 68.72%, 59.19% and 61.68% on he basis of ethanol, respectively.
社団法人日本生物工学会の論文
1955-04-15