食品科学 ›› 2003, Vol. 24 ›› Issue (9): 92-94.

• 基础研究 • 上一篇    下一篇

灰色链轮丝菌产转谷氨酰胺酶发酵条件的优化

 陈义华, 陆兆新, 尤华   

  1. 南京农业大学食品科技学院
  • 出版日期:2003-09-15 发布日期:2011-12-13

Optimizing Fermentation Conditions to Produce Transglutaminase byStreptoverticillium Griseoverticillatum L-18’

 CHEN  Yi-Hua, LU  Zhao-Xin, YOU  Hua   

  • Online:2003-09-15 Published:2011-12-13

摘要: 以诱变后的灰色链轮丝菌L-18’作为研究对象,对它的摇瓶液体发酵条件进行优化得到其液体发酵的最佳条件为:以48h种龄的种子液接种1%液体发酵培养基,在30℃、pH为7.5条件下发酵;培养基的组成为0.8%甘油、0.4%胰蛋白胨、0.6%酵母膏、100×10-6 CaCl2 、500×10-6 K2HPO4 、0.1%Tween40。发酵液转谷氨酰胺酶活由0.962U/ml提高到1.623U/ml。

关键词: 灰色链轮丝菌, 转谷氨酰胺酶, 发酵条件

Abstract: The effects of various factors to produce of transglutaminase by L-18’ were studied. On the base of single factorexperiments, the optimum conditions for liquid fermentation were found to be: pH 7.5 , 30℃,the proper starter age 48 hours andproper inoculating amount 1%(v/v).The components of medium were: 0.8% glycerol, 0.4% tryptone, 0.6%yeast extract, 100×10-6 CaCl2, 500×10-6 K2HPO4 , and 0.1%Tween40. The transglutaminase activity reached 1.623U/ml.

Key words: Streptorerticillium griseovertici llatum L-18’, transglutaminase, fermentation conditions