麩酸醱酵之研究　第三報　幾種麩酸生產菌之醱酵條件之比較

Studies on the L-Glutmic Acid Fermentation. III. Comparative Studies of Some Fermentation Conditions of Several Strains of L-Glutamic Acid Accumulating Bacteria

阮豐山(Fung-San Yuan) ； 何傳家(Choan-Tsia Ho) ； 郭主發(Tsu-Hwa Quo) ； 鄭德鴻(Tso-Hong Cheng)

《化學》 51年1期 (1962/03) Pp. 21-28

https://doi.org/10.6623/chem.1962005

摘要

新分離菌株第801~805號，以糖蜜為其營養之來源可生成對消費糖收率達45~55%之麩酸。這些菌株之最適宜糖蜜添加量概為一致，但對磷、鉀之最適宜量對Kd最之最適宜數值貝稍有差別。為求麩酸醱酵順利迅速並獲得良好的收率起見，除需要有適的Kd，適宜濃度的無機鹽類，生活素（biotin）或維生素B1外，當需適宜量的混合胺基酸及其他未知成份的營養素存。

並列摘要

The newly isolated strains No. 801, 802, 803, 804 and 805 accumulate L-glutamic acid to an amount of 45-55 per cent based on the sugar consumed, when molasses is used as a nutrient source. The optimum quantity of molasses used as nutrient in fermentation is nearly the same (as shown in Table 4). However, the quantities of phosphate au l potassium, and the Kd values required are somewhat different with. respect to the strains used (as shown in Tables 6 and 9). Furthermore, it was found that a quick and smooth fermentation with high yield of L-glutamic acid requires not only an optimum Kd value and the presence of optimum quantities of inorganic salts and biotin (0,2--0.4 r % as shown in Table 8) or vitamin B1 (strain No. 804.requires also more than 10 r % [Table 6J), but also optimum quantities of amino acids and some other unknown nutrients (Table 8).