食品科学 ›› 2008, Vol. 29 ›› Issue (12): 400-404.

• 生物工程 • 上一篇    下一篇

响应面法优化枯草芽孢杆菌产蛋白酶的发酵条件

 张智, 朱宏亮, 钮宏禹, 罗欢华   

  1. 东北林业大学林学院;
  • 出版日期:2008-12-15 发布日期:2011-12-08

Optimization of Fermentation Production Conditions of Protease by Bacillus subtilis with Response Surface Methodology

 ZHANG  Zhi, ZHU  Hong-Liang, NIU  Hong-Yu, LUO  Huan-Hua   

  1. College of Forestry,Northeast Forestry University,Harbin 150040,China
  • Online:2008-12-15 Published:2011-12-08

摘要: 在单因素试验的基础上,应用响应面分析法对影响枯草芽孢杆菌产蛋白酶的因素进行分析,得到了最佳发酵条件为温度40℃、pH8.04、接种量8.3%、发酵时间56h,此条件下的蛋白酶酶活为247.8U/ml,比单因素试验的最高酶活228.3U/ml提高了8.54%。

关键词: 枯草芽孢杆菌, 蛋白酶, 响应面

Abstract: On the basis of single-factor test,response surface methodology was used to analyze the main factors affecting fermentation production of protease by Bacillus subtilis. Results showed that the optimal fermentation conditions are as follows:40 ℃,pH 8.04 and inoculation amount 8.3%,Under these conditions,the produced protease activity is up to 247.8 U/ml after fermentation for 56 hours. The protease activity is higher 8.54% than the highest one obtained in the single-factor test,which is only 228.3 U/ml.

Key words: Bacillus subtilis, protease, response surface methodology