CIESC Journal ›› 2010, Vol. 18 ›› Issue (1): 137-142.

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Optimization of Fermentation Process for Human-like Collagen Production of Recombinant Escherichia coli Using Response Surface Methodology

张驰1,2,3, 范代娣2,3,4, 尚龙安5, 马晓轩2,3,4, 骆艳娥2,3,4, 薛文娇2,3,4, 高鹏飞2,3,4   

  1. 1. School of Life Science, Northwest University, Xi'an 710069, China;
    2. Shaanxi R&D Center of Biomaterial and Fermentation, Xi'an 710069, China ;
    3. Shaanxi Key Laboratory of Degradable Biomedical Materials, Xi'an 710069, China;
    4. School of Chemical Engineering, Northwest University, Xi'an 710069, China;
    5. College of Biological and Chemical Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China
  • 收稿日期:2009-03-28 修回日期:2009-08-09 出版日期:2010-02-28 发布日期:2010-12-30
  • 通讯作者: FAN Daidi, E-mail: fandaidi@nwu.edu.cn
  • 作者简介:
  • 基金资助:
    Supported by the National Natural Science Foundation of China(20776119);the National High Technology Research and Development Program of China(2007AA03Z456A);the Special Research Program of the Education Department of Shaanxi Province(07JK417)

Optimization of Fermentation Process for Human-like Collagen Production of Recombinant Escherichia coli Using Response Surface Methodology

ZHANG Chi1,2,3, FAN Daidi2,3,4, SHANG Long'an5, MA Xiaoxuan2,3,4, LUO Yan'e2,3,4, XUE Wenjiao2,3,4, GAO Pengfei2,3,4   

  1. 1. School of Life Science, Northwest University, Xi'an 710069, China;
    2. Shaanxi R&D Center of Biomaterial and Fermentation, Xi'an 710069, China ;
    3. Shaanxi Key Laboratory of Degradable Biomedical Materials, Xi'an 710069, China;
    4. School of Chemical Engineering, Northwest University, Xi'an 710069, China;
    5. College of Biological and Chemical Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China
  • Received:2009-03-28 Revised:2009-08-09 Online:2010-02-28 Published:2010-12-30
  • Supported by:
    Supported by the National Natural Science Foundation of China(20776119);the National High Technology Research and Development Program of China(2007AA03Z456A);the Special Research Program of the Education Department of Shaanxi Province(07JK417)

摘要: In order to improve the production of human-like collagen Ⅲ(HLC Ⅲ)by fed-batch culture of recombinant Escherichia coli BL21,the Plackett-Burman and Box-Behnken design were applied to optimize the fermentation process parameters.Three variables(induction time,inoculum age and pH),which have significant effects on HLC Ⅲ production,were selected from eight variables by Plackett-Burman design.With the regression coefficient analysis in the Box-Behnken design,a relationship between HLC Ⅲ production and three significant factors was obtained,and the optimum levels of the three variables were as follows:induction time 3.2h,inoculum age 12.6 h and pH 6.7.The 3D response surface plots and 2D contour plots created by the Box-Behnken design showed that the interaction between induction time and pH and that between innoculum age and pH were significant.An average 9.68 g·L-1HLC Ⅲ production was attained in the validation experiment under optimized condition,which was 80%higher than the yield of 5.36 g·L-1 before optimization.

关键词: ermentation process parameters, human-like collagen Ⅲ, optimization, response surface methodology

Abstract: In order to improve the production of human-like collagen Ⅲ(HLC Ⅲ)by fed-batch culture of recombinant Escherichia coli BL21,the Plackett-Burman and Box-Behnken design were applied to optimize the fermentation process parameters.Three variables(induction time,inoculum age and pH),which have significant effects on HLC Ⅲ production,were selected from eight variables by Plackett-Burman design.With the regression coefficient analysis in the Box-Behnken design,a relationship between HLC Ⅲ production and three significant factors was obtained,and the optimum levels of the three variables were as follows:induction time 3.2h,inoculum age 12.6 h and pH 6.7.The 3D response surface plots and 2D contour plots created by the Box-Behnken design showed that the interaction between induction time and pH and that between innoculum age and pH were significant.An average 9.68 g·L-1HLC Ⅲ production was attained in the validation experiment under optimized condition,which was 80%higher than the yield of 5.36 g·L-1before optimization.

Key words: ermentation process parameters, human-like collagen Ⅲ, optimization, response surface methodology