炭化水素を炭素源とする酵母の生産に関する研究 (第1報) : 炭化水素資化性酵母の検索

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We attempted to obtain yeast strains which utilize hydrocarbon as carbon source. In this report, two hundred and fifty-seven strains of yeast preserved in our laboratory were employed. These strains included one hundred and thirty-three strains of identified yeast ,i.e., forty-four strains of Pichia, fifty-four strains of Hansenula, six strains of Saccharomyces, ten strains of Candida, three strains of Mycotorula,five strains of Rhodotorula and eleven strains of Debaryomyces,and one hundred and twenty-four strains of unidentified yeast isolated in our laboratory. Seven strains of yeast, Mycotorula japonica 316, Mycotorula japonica 6226, Mycotorula japonica 6229, Candida tropicalis 6019, Candida tropicalis 6263, Candida tropicalis 6264 and unidentified strain Y 191, utilizing hydrocarbon as carbon source were selected. Among these seven strains of yeast, Mycotorula japonica 316 and Y 191 strain, which had been isolated from oily soil by M.Akaki (one of the authors), grew abundantly, especially in the medium containig cetane as carbon source. When ammonium sulphate was used as nitrogen source, the pH of culture media depressed extremely during cultivation. In the culture with media, which used urea instead of ammonium sulphate as nitrogen source, these yeast cultures were prevented from depression of pH during cultivation, and gave high yield of the yeast cell, particularly Y 191 strain. Since Y 191 strain is capable of utilizing various hydrocarbon source and making rapid growth in the media containig hydrocarbon, it would seem to be a promising strain for cell production from hydrocarbons.

著者

赤木盛郎
鈴鹿短期大学

炭化水素を炭素源とする酵母の生産に関する研究 (第1報) : 炭化水素資化性酵母の検索

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