食品科学 ›› 2012, Vol. 33 ›› Issue (23): 166-170.

• 生物工程 • 上一篇    下一篇

响应面法优化微量热仪中葡萄糖氧化酶催化反应的条件

张成楠,徐 斐*,曹 慧,于劲松   

  1. 上海理工大学食品安全研究所
  • 收稿日期:2012-10-30 修回日期:2012-11-28 出版日期:2012-12-15 发布日期:2012-12-12
  • 通讯作者: 徐斐 E-mail:xufei.first@263.net
  • 基金资助:

    抑制型量热式酶传感器检测农药过程中的酶热学问题及其微量热过程的调控

Optimization of Catalytic Reaction Conditions for Glucose Oxidase in Microcalorimeter by Response Surface Methodology

Cheng-Nan ZHANG,Fei Xu, ,   

  • Received:2012-10-30 Revised:2012-11-28 Online:2012-12-15 Published:2012-12-12
  • Contact: Fei Xu E-mail:xufei.first@263.net

摘要: 利用微量热仪Micro DSC Ⅲ,以葡萄糖氧化酶催化氧化葡萄糖的反应放热为评价指标,在单因素和中心旋转组合试验设计结果的基础上,通过响应面法优化葡萄糖氧化酶催化反应的工艺条件。3个因素对葡萄糖氧化酶催化产热的影响依次为:酶添加量>pH值>反应温度。响应面法分析显示,葡萄糖氧化酶氧化葡萄糖的最佳工艺参数为:反应温度35℃、pH4.46、酶添加量1.58mg/mL,总的反应热为39.6668J,与预测值40.1071J的相对误差为1.11%。经响应面法研究所得回归模型显著。

关键词: 微量热法, 葡萄糖氧化酶, 响应面

Abstract: Response surface methodology based on a central composite design was used to optimize catalytic reaction conditions for glucose oxidase in micro-differential scanning calorimeter (Micro DSC) based on heat release. Three reaction conditions in decreasing order of their effects on heat release were enzyme dosage, pH and reaction temperature and their optimal values were 1.58 mg/mL, 4.46 and 35 ℃, respectively. Under these conditions, the observed total heat release was 39.6668 J, and the relative error was 1.11% compared with 40.1071 J of the predicted value. The fitted regression model was statistically significant.v

Key words: microcalorimetric method, glucose oxidase, response surface methodology

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