Eremothecium ashbyiiによるRiboflavinの生産に就て(第1報)

概要

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Shaker-flask experiments were carried out on riboflavin production by Eremothecium ashbyii and the following results were obtained : 1) The most favorable pH for riboflavin production by E. ashbyii was 6.4〜6.8.2) When the medium was sterilized by batch method, cooking under pressure of 1.5 kg per square cm gage for 15 min or 2.0 kg for 10 min was most suitable.3) The effect of such nitrogen sources as rice-germ, malt sprouts, bean-cake, chrysalis oil-cake and corn-germ on riboflavin yields was studied, and it was found that corn-germ and bean-cake produced the most satisfactory results, especially in the presence of peptone. Stimulative substance in corn-germ was readily extracted with 96% ethanol.4) Stillage was a favorable medium when it was supplemented with glucose, and addition of corn-germ or bean-cake increased the riboflavin production considerably.
社団法人日本生物工学会の論文
1954-05-15