| 脂肪酶降解壳聚糖的反应动力学研究 |
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| 引用本文： | 马如,黄明智. 脂肪酶降解壳聚糖的反应动力学研究[J]. 化学世界, 2002, 43(9): 472-475 |
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| 作者姓名： | 马如 黄明智 |
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| 作者单位： | 北京化工大学材料科学与工程学院,北京,100029 |
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| 摘 要： | 用还原糖法研究了脂肪酶降解壳聚糖过程中一系列反应条件包括温度、p H值、时间、酶浓度、底物浓度对降解速度的影响 ,比较合适的降解条件是 :最适宜温度 5 5°C,最适宜 p H值 5 .0 ,适当增大酶浓度和底物浓度能够加速壳聚糖的降解 ,而且脂肪酶降解壳聚糖的反应不遵循简单的一级反应动力学
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| 关 键 词： | 脂肪酶 壳聚糖 降解 |
| 文章编号： | 0367-6358(2002)09-0472-04 |
Study on the Kinetics of the Lipase-promoted Hydrolysis of Chitosan |
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| MA Ru,HUANG Ming zhi. Study on the Kinetics of the Lipase-promoted Hydrolysis of Chitosan[J]. Chemical World, 2002, 43(9): 472-475 |
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| Authors: | MA Ru HUANG Ming zhi |
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| Abstract: | The effect of reaction temperature, pH, substrate and enzyme concentration on the hydrolysis rate of chitosan by lipase was investigated. The [ η ] of chitosan acetate solution decreased quickly by the catalysis of lipase. The optimum temperature and pH were 55 °C and 5.0 , respectively. Increasing enzyme concentration could accelerate the hydrolysis of chitosan. The depolymerization of chitosan did not conform to simple first order kinetic model. |
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| Keywords: | lipase chitosan depolymerization |
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