添加不同有机氮源对L-赖氨酸发酵的作用  

Effect of feeding different organic nitrogen sources on L-lysine fermentation

作　　者：李朝波 翟秀超 温琦 王世宾 Li Chaobo;Zhai xiuchao;Wen Qi;Wang Shibin(Wuxi COFCO Engineering&Technology Co.,Ltd.,Wuxi 214035)

机构地区：[1]无锡中粮工程科技有限公司,无锡214035

出　　处：《粮食与食品工业》2021年第3期44-47,共4页Cereal & Food Industry

基　　金：独联体地区小麦精深加工项目“发酵法生产饲料级L-赖氨酸”。

摘　　要：为了提高L-赖氨酸发酵产量和降低成本,本文主要通过优化L-赖氨酸发酵培养基,分别用玉米浆、菌体蛋白水解液、菌体蛋白水解液和玉米浆混配、豆粕水解液、多肽粉作为有机氮源培养基,5 L发酵罐中进行发酵培养。通过试验对比不同有机氮源对发酵过程中OD和产酸的影响,确定了菌体蛋白水解液和玉米浆混合使用作为有机氮源的发酵工艺,为大生产赖氨酸发酵提供参考。In order to improve the fermentation yield of L-lysine and lower production cost,this paper mainly optimized the fermentation medium of L-lysine,corn steep liquor,bacterial protein hydrolysate,mixture of bacterial protein hydrolysate and corn steep liquor,soybean meal hydrolysate and polypeptide powder were used as organic nitrogen sources to prepare different culture media,5 L fermentor for fermentation culture.Comparison by experiment,different organic nitrogen sources had different effects on OD and acid production during the fermentation.Determined the corn steep liquor as organic nitrogen sources for fermentation process,Providing reference for lysine fermentation production.

关 键 词：有机氮源 L-赖氨酸 玉米浆 菌体蛋白水解液 OD 

分 类 号：TS201[轻工技术与工程—食品科学]