酵母製造に関する研究 : 不純物酒精の利用について(其の3)

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The effects of crude alcohol and its important components, i.e. ethanol, methanol, fusel oil and isoamyl alcohol, on the growth of Torula utilis, yeast No. 110,Mycotorula japonica and FLEISCHMANN's yeast were investigated, and the following results were obtained.1) Ethanol began to inhibit the growth of the four strains of yeasts with a concentration of about 2.0〜2.5%, and it suppressed the growth in a concentration of 7.5%. The ethanol concentration of culture medium fitted for the growth of the yeasts was less than 1.0%.2) Methanol exerted no remarkable effect on the growth of the four strains of yeasts in a concentration below 1.0%, but it inhibited their growth in a concentration above 2.0〜3.5%.No growth of the yeasts was observed in the medium containing 10% methanol. The inhibitory action of methanol on the growth of the yeasts varied somewhat depending upon the nature of the carbon source added to the medium.3) The inhibitory action of fusel oil and isoamyl alcohol on the growth of the yeasts was more remarkable than that of ethanol and methanol. Fusel oil and isoamyl alcohol produced no remarkable effect on the growth of the four strains of yeasts, when each of them was added at the rate of less than 0.01 cc per 10 cc of the culture medium, but the yeasts could not grow in the presence of 0.1cc of fusel oil or 0.08〜0.1cc of isoamyl alcohol.4) The amount of crude alcohol fitted for the growth of the yeasts was 0.1〜0.5cc per 10 cc of the culture medium.
社団法人日本生物工学会の論文
1958-03-15

著者

赤木盛郎
三重大学農学部

酵母製造に関する研究 : 不純物酒精の利用について(其の3)

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