グルタミン酸醗酵に関する研究 (第10報) : Kd (酸素吸収速度恒数) について

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The relation between Kd (oxygen absorption coefficient) and the glutamic acid fermentation of strain No. 1942 was studied on a scale of ERLENMEYER's flask. Within the experimented range of Kd, the yield of glutamic acid rose as the Kd increased, the optimum Kd being more than 4.09×10^<-6> g-mole O_2/atm. min. ml.Experiments were then extended to a wider range of Kd with 51 jar fermenter, where agitation was veried from 200r.p.m. to 600r.p.m. and aeration from 1 l/min. to 4 l/min. The maximum Kd was 13.90×10^<-6> and the minimum 0.44×10^<-6>. Agitation exerted much more influences upon Kd than aeration did, following the equation Kd=9.7×10^<-13> V^<0・4>N^<3・2>, as far as the agitation was between 300〜600r.p.m. The accumulation of glutamic acid was at the highest level when Kd was between 2.24〜5.51×10^<-6>, the optimum being around 4.40×10^<-6>.
社団法人日本生物工学会の論文
1959-08-15