| 超声对酶的影响 |
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| 引用本文： | 吕鹏,庄重,凌建亚,张长铠. 超声对酶的影响[J]. 生物技术通讯, 2004, 15(5): 534-536 |
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| 作者姓名： | 吕鹏 庄重 凌建亚 张长铠 |
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| 作者单位： | 山东大学,微生物技术国家重点实验室,济南,250100 |
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| 摘 要： | 超声对酶的影响与超声的强度和介质的性质有关。适宜的超声可提高酶促反应速度，较低强度的超声可提高酶的活性，而较高强度的超声会降低酶促反应速度甚至使酶失活。介质性质不同时，超声对酶活力的促进效果与稳定性不同。非极性介质中酶对于超声的抗性要优于水溶液。在较低强度的超声作用下，超声增加了底物的传质作用，并可导致酶分子的构象发生变化。
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| 关 键 词： | 超声 低强度 影响 作用 适宜 效果 酶促反应 传质 失活 高强度 |
| 文章编号： | 1009-0002(2004)05-0534-03 |
| 修稿时间： | 2003-02-06 |
Effects of ultrasound on enzymes |
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| LV Peng,ZHUANG Zhong,LING Jian-ya,ZHANG Chang-kaiState Key Laboratory of Microbial Technology,Shandong University,Jinan ,China. Effects of ultrasound on enzymes[J]. Letters in Biotechnology, 2004, 15(5): 534-536 |
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| Authors: | LV Peng ZHUANG Zhong LING Jian-ya ZHANG Chang-kaiState Key Laboratory of Microbial Technology Shandong University Jinan China |
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| Affiliation: | LV Peng,ZHUANG Zhong,LING Jian-ya,ZHANG Chang-kaiState Key Laboratory of Microbial Technology,Shandong University,Jinan 250100,China |
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| Abstract: | The effects of ultrasound on enzymes are involved with the intensity of ultrasound and the properties of solvent. Generally, lower intensity ultrasound can increase the activity of enzymes, while higher one can decrease the reaction rate and inactive the enzymes. The enzymes are much more resistant to inactivation by ultrasound in nonaqueous solvents than in water. |
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| Keywords: | ultrasound enzyme nonaqueous solvents activity stability |
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