酵母の生産に関する研究 : (第3報) 酢酸を炭素源とする酵母の培養(その1)

概要

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Investigations on the acetate assimilation of yeast had revealed that some strains of genera Candida, Hansenula and Pichia grew heavily on the acetate medium, especially C. micoderma C. krusei and C. utilis. Using C. utilis, the authors investigated the cultural conditions of this acetate assimilating yeast. A vigorous grouth of C. utilis was obtained with 1% or 2% acetate in the medium. This strain grew most favorably at the range of pH 6.0 to 7.0,and the growth was reduced at the pH below or higher than this range. The effects of additions of growth factors with 0.1% concentrations, phosphate concentrations and aeration on the cell growth could not be recognized. The cell growth accelerated by an acetic acid feeding. When C. utilis was cultured on a medium with the initial concentration at 1% of acetate, and then acetic acid was added day by day during the culture to make the final concentration of acetate 4% in the culture broth after 4 days, the cell yield was 13.0g per liter.
社団法人日本生物工学会の論文
1970-08-25