ブタノール・アセトン醗酵に依るビタミンB_2の生成に關する研究(第2報) : ビタミンB_2の生成に及ぼす鐡その他2,3の物質の影響

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The influence of iron and its compounds, cyanate, boric acid, sodium chloride and some mineral constituents in water, on the flavin formation has been studied.Flavin formation is slightly inhibited by the presence of 0.00001% ferric chloride or 0.05% sodium chloride, but seriously inhibited by 0.0005% ferric chloride or 0.1% sodium chloride in the fermentation of 5% corn mashes.About 30% more flavin was obtained from 5% corn mashes containing 0.01% KCN or NaCN and lead plate ; and 39% of flavin increased in the mashes containing 0.01% boric acid and lead plate, compared with those containing lead plate alone.It seems that, for flavin formation some delicate relation may be existed to the amount of iron and some inorganic constituents contained in raw materials and water used for the preparation of mashes and lead added to the latter.
公益社団法人日本生物工学会の論文
1952-03-15