食品科学 ›› 2010, Vol. 31 ›› Issue (11): 173-177.doi: 10.7506/spkx1002-6630-201011037

• 生物工程 • 上一篇    下一篇

β- 葡萄糖苷酶基因工程菌发酵工艺优化

刘长江1,梁 爽1,郑 艳1,宗绪岩1,李长彪2   

  1. 1.沈阳农业大学食品学院 2.抚顺市农村经济委员会
  • 收稿日期:2009-10-12 修回日期:2010-01-07 出版日期:2010-06-01 发布日期:2010-12-29
  • 通讯作者: 梁爽 E-mail:liangdeshuang@163.com
  • 基金资助:

    辽宁省科技厅科技攻关项目(2004205001)

β-Glucosidase Production under Optimized Fermentation Conditions of Genetically Engineered Bacterial Strain

LIU Chang-jiang1,LIANG Shuang1,ZHENG Yan1,ZONG Xu-yan1,LI Chang-biao2   

  1. 1. College of Food Science, Shenyang Agricultural University, Shenyang 110161, China;
    2. Committee of Rural Economy of Fushun, Fushun 113000, China
  • Received:2009-10-12 Revised:2010-01-07 Online:2010-06-01 Published:2010-12-29
  • Contact: LIANG Shuang E-mail:liangdeshuang@163.com

摘要:

以菌体生物量和酶比活力为参考指标,通过单因素和响应面分析法优化β- 葡萄糖苷酶基因工程菌发酵条件,得到最优的发酵条件:温度37.9℃、pH6.6、接种量10%、转速200r/min、诱导时间10h,在此条件下发酵可以使β- 葡萄糖苷酶酶活力达到147.8U/L。

关键词: β-葡萄糖苷酶, 基因工程, 发酵工艺

Abstract:

The fermentation conditions of genetically engineered bacterial strain for β-glucosidase production were optimized using one-factor-at-a-time method and response surface analysis based on central composite design. The optimal procedure for β-glucosidase production was based on 8 h fermentation under the conditions of pH 6.6, 37.9 ℃, 10% inoculation amount, 200 r/min rotation speed followed by 10 h of induction with the addition of 0.5 mmol/L IPTG, which made the enzyme activity and of β-glucosidase reach up to 147.8 U/mL, respectively.

Key words: &beta, -glucosidase, genetically engineered bacterial strain, fermentation process

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