細菌の Amylase 生産に關する研究 (第3報) : 炭素源及び窒素源について

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The present work has been dealt with the influences of various carbon and bitrogen sources upon the amylase production and the glowth of the bacteria used in the experiments. The results are as follows : 1. Soluble starch and ethyl alcohol were found to be the most favourable carbon sources for the amylase production as well as for the growth.2. Sodium acetate was as effective as soluble starch and ethyl alcohol for the glowth, but far less so for the enzyme production.3. Both the growth and the amylase production were poor in the medium containing glucose, mannitol or glycerol as the carbon source, but the acidity of the medium increased.4. Among the nitrogen sources, sodium asparaginate was most favourable for the glowth, and peptone for the amylase production.5. Abundant amylase was produced in the medium centaining much more amounts of nitrogen source in comparison with carbon source, e. g. the medium containing 5 % peptone and 1% soluble starch. Higher concentrations of peotone than 5% brought about no better effect on the amylase production, and the increase of the concentration of soluble starch rather ingibited it.
公益社団法人日本生物工学会の論文
1952-03-15