尿素在核黄素发酵中的增产作用  

THE INCREASING EFFECT OF UREA ON RIBOFLAVIN FERMENTATION PRODUCTION

作　　者：司马迎春[1] 班睿[1] 林涛[1] 周士奇[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《河南工业大学学报（自然科学版）》2005年第3期30-33,共4页Journal of Henan University of Technology：Natural Science Edition

基　　金：国家自然科学基金资助项目(20036010)

摘　　要：以2.5g/100mL的酵母粉作为Bacillussubtilis24/pMX45核黄素发酵的氮源时,氮源的供给不足,在培养基中添加NH4Cl(、NH4)2SO4、尿素等氮源进行发酵,结果表明:在酵母粉作氮源的基础上添加尿素,可以提高核黄素的产量,添加0.2g/100mL的尿素可以提高核黄素产量20%.The nitrogen source is not enough when 2.5% yeast powder was used as the nitrogen source forBacillus subtilis24/pMX45 riboflavin fermentation. NH4Cl, (NH4)2SO4and urea are added to the culture medium of fer- mentation. The result shows that urea will increase the yield of riboflavin, and the yield of riboflavin will be in- creased 20% when the addition level of urea is 0.2%·

关 键 词：核黄素 发酵 尿素 

分 类 号：TQ920.6[轻工技术与工程—发酵工程]