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林产化学与工业 ›› 2010, Vol. 30 ›› Issue (3): 29-34.

• 研究报告 • 上一篇    下一篇

响应面优化法在纤维素酶合成培养基设计上的应用

张晓萍, 杨静, 勇强, 余世袁   

  1. 南京林业大学 林木遗传与生物技术省部共建教育部重点实验室, 江苏 南京 210037
  • 收稿日期:2009-12-08 修回日期:1900-01-01 出版日期:2010-06-30 发布日期:2010-06-30
  • 通讯作者: 余世袁,教授,博士生导师,主要从事生物质资源生物降解与转化和制浆造纸生物技术的研究。

Statistical Optimization of Process Parameters on Cellulase Production

ZHANG Xiao-ping, YANG Jing, YONG Qiang, YU Shi-yuan   

  1. Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
  • Received:2009-12-08 Revised:1900-01-01 Online:2010-06-30 Published:2010-06-30

摘要: 以里氏木霉(Trichoderma reesei) RUT C30为产酶菌株,经酵母发酵除去葡萄糖后的脱葡萄糖淀粉水解液为碳源,采用Plackett-Burman(PB)设计法寻找培养基组成中对产酶影响最大的因素,并经响应面试验设计优化最佳产酶条件。试验得到对产酶影响最大的两个因素分别为脱葡萄糖淀粉水解液质量浓度和氯化钙质量浓度,经最陡爬坡和响应面试验建立了滤纸酶活与两者之间的模型。对此模型求解得到,当脱葡萄糖淀粉水解液质量浓度为28.85g/L、氯化钙质量浓度为0.67g/L时,产酶120h理论酶活为7.52FPIU/mL,156h达到最大酶活为11.16FPIU/mL,β-葡萄糖苷酶活最大为0.79IU/mL。

关键词: 脱葡萄糖淀粉水解液, 纤维素酶, 响应面法

Abstract: Placket-Burman (PB) design was applied to discover the most significant parameters affecting cellulase production by Trichoderma reesei RUT C30 on deglucosed starch obtained from yeast fermentation, and the condition of cellulase production was optimized by response surface method(RSM). Results showed that mass concentration of hydrolysate from hydrolysis of deglucosed starch and mass concentration of CaO were the two most significant parameters. The model between enzyme activity and these two parameters was build through the path of steepest ascent and RSM. Under optimized conditions, the levels of these two parameters were respectively 28.85 and 0.67g/L. The theoretical enzyme activity from 120h fermentation was 7.52FPIU/mL, and the maximal value was 11.16FPIU/mL from 156h fermentation. The maximal glucosidase activity reached 0.79IU/mL.

Key words: deglucosed starch hydrolysate, cellulase, response surface method

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