食品科学 ›› 2007, Vol. 28 ›› Issue (11): 322-327.

• 生物工程 • 上一篇    下一篇

RSM法优化Aspergillus oryzae AO-01产糖化酶条件的研究

 李旺军, 方华, 谢广发, 曹钰, 陆健   

  1. 江南大学工业生物技术教育部重点实验室; 浙江古越龙山绍兴酒股份有限公司; 江南大学生物工程学院; 江南大学工业生物技术教育部重点实验室 江苏无锡214122; 江苏无锡214122; 浙江绍兴312000; 江苏无锡214122江南大学生物工程学院;
  • 出版日期:2007-11-15 发布日期:2011-11-22

Optimization of Fermention Parameters for Glucoamylase Production by Aspergillus oryzae AO-01 with Response Surface Methodology

 LI  Wang-Jun, FANG  Hua, XIE  Guang-Fa, CAO  Yu, LU  Jian   

  1. 1.Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China; 2.Zhejiang Guyue Longshan Shaoxing Wine Co.,Ltd., Shaoxing 312000, China; 3.School of Biotechnology, Jiangnan University, Wuxi 214122, China
  • Online:2007-11-15 Published:2011-11-22

摘要: 采用单因素试验研究培养时间、培养温度和固水比对米曲霉(Aspergillus oryzae)AO-01产糖化酶的影响。在此基础上,再采用Box-Behnken响应面法(response surface methodology,RSM)对以上培养条件进行了优化。通过对二次多项回归方程求解得知,在上述自变量分别为培养时间32.8h,培养温度31.2℃,固水比1:1.24时,糖化酶的产量从最低值656.2μ/g干曲提高到1645.1μ/g干曲。验证实验证实了方程的预测值与实际值之间具有较好的拟合度。

关键词: 米曲霉, 糖化酶, Box-Behnken设计, 响应曲面

Abstract: The effects of incubation time, temperature and moisture content on the production of glucoamylase by Aspergillus oryzae AO-01 were investigated on the results of one-factor at a time method. Then a response surface methodology (RSM) was used to optimize the above critical external factors, so as to find out the optimal conditions and the relationships among these factors. By solving the quadratic regression model equation with appropriate statistic methods, the optimal conditions of cultivation time, temperature and ratio of substrate to water are 32.8 h, 31.2℃ and 1:1.24 respectively. The production of the glucoamylase is increased from the lowest value of 656.2 U/g to 1645.1U/g wheat Qu. The experimental data under various conditions have validatedt het heoretical values.

Key words: Aspergillus oryzae, glucoamylase, Box-Behnken design, response surface methodology