Rhodotorula属に関する研究 (第4報) : Rhodotorula属菌のビタミン要求性(1)

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As to the vitamin requirement of Rhodotorula, test was conducted on forty-two cultures including the groups of lineal descendants from several old species of Asian origin. Two kinds of media differing in nitrogen source were employed as basal media, i.e. one containing (NH_4)_2SO_4 and the other casein hydrolyzate. The vitamins tested were eight in kinds and all of them were soluble in water. The extent of the vitamin requirement was determined by comparing the turbidities due to the yeast growth in the basal media and in the same media containing vitamins.The value of growth ratio under 5% was regarded as the essential requirement and that under 40% ad the stimulative requirement.Rhodotorula glutinis (FRES.) HARRISON em. HASEGAWA did not require vitamins and therefore this species was found to be autotrophic so far as vitamin is concerned. The other species and varieties, however, required vitamins stimulatively or essentially for the growth on the two basal media, so these vitamins are to be investigated.
社団法人日本生物工学会の論文
1959-05-15