食品科学 ›› 2003, Vol. 24 ›› Issue (10): 73-77.

• 工艺技术 • 上一篇    下一篇

微生物谷氨酰胺转胺酶的分批发酵生产

 刘新征, 王灼维, 杨秋明, 郭兴要, 韩兆鹏, 蔡慧农, 王璋   

  1. 中国食品发酵工业研究院,集美大学生物工程学院
  • 出版日期:2003-10-15 发布日期:2011-12-13

Production of Microbial Transglutaminase by Batch Fermentation

 LIU  Xin-Zheng, WANG  Zhuo-Wei, YANG  Qiu-Ming, GUO  Xing-Yao, HAN  Zhao-Peng, CAI  Hui-Nong, WANG  Zhang   

  1. 1.China National Research Institute of Food and Fermentation Industries;2.Bioengineering College of Jimei University
  • Online:2003-10-15 Published:2011-12-13

摘要: 在首先采用我们自行设计的2L小型、便易的生化反应器,对我们研究室保藏的高产酶菌株链霉菌(Streptomyces sp.)WZFF.L-M168发酵生产微生物谷氨酰胺转胺酶(MTG)过程中发酵培养基的碳源、氮源和初始pH值的影响作用进行研究,确定培养条件后,逐级扩大发酵罐规模,在20L和200L发酵罐上以在线监控技术手段直接监测分析环境因素对MTG发酵生产的作用效果,确立各级发酵罐分批发酵的生产工艺条件。结果表明:碳氮源采用葡萄糖、淀粉和多价胨,初始pH值为7.0,接种量5%~10%,发酵过程中在线控制培养温度、pH、通气量和搅拌速度等各项参数指标分别为30±0.5℃、6.6~6.9,0.8~1.1vvm和200~400r/min较为适宜。在这优化技术条件下,200L发酵罐可以稳定生产酶活在2.75U/ml以上的MTG。

关键词: 谷氨酰胺转胺酶, 链霉菌, 分批发酵, 在线监控

Abstract: After using a simple but efficient mini-bioreactor (2L) we equipped to study the effects of carbon source, nitrogensource and initial pH of fermentation broth on the production of microbial transglutaminase (MTG) by a new potent strain,Streptomyces sp. WZFF.L-M168 isolated from soil and preserved in our laboratories. The incubation conditions were established.The production was scaled up to 20 L and 200 L jar-fermenters through the utilization of on-line control techniques, and then thetechniques for batch fermentation of MTG were set up. The experimental results showed that the optimal processing param-eters achieved were 1.5% glucose and 1.0% soluble starch for the carbon source, 2.0% multi-peptone for the nitrogen source,initial pH 7.0, inoculum ratios of 5%-10%, that the following conditions were suitable during the MTG production with on-linecontrolled supervision: temperature 30℃±0.5℃, pH 6.6~6.9, aeration rate 0.8~1.1 vvm and agitation speed 300~400r/min.Under these conditions, the L-M168 strain could stably produce MTG higher than 2.75U/ml.

Key words: transglutaminase, Streptomyces sp., batch fermentation, on-line control #, the corresponding author