| 脉冲电场非热杀菌效果分析 |
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| 引用本文： | 王黎明,史梓男,关志成,程伦,廖小军,钟葵.脉冲电场非热杀菌效果分析[J].高电压技术,2005,31(2):64-66. |
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| 作者姓名： | 王黎明 史梓男 关志成 程伦 廖小军 钟葵 |
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| 作者单位： | 清华大学深圳研究生院,深圳,518055;中国农业大学食品学院,北京,100083 |
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| 摘 要： | 研究了高压脉冲电场(PEF)对液体食品的非热杀菌效果。杀菌实验中分别采用平板和同轴两种电极形 式处理接种了啤酒酵母和大肠杆菌的胡萝卜汁样品,通过改变脉冲电场的处理时间(即脉冲数)和电场强度,得到 了各种不同情况下两种细菌的残活率最大下降>4.5和3.5个对数,证明了杀菌效果相当可观,并比较分析了影响 杀菌效果的因素,最后初步讨论了杀菌的机理。
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| 关 键 词： | 高压脉冲电场 啤酒酵母 大肠杆菌 残活率 |
| 文章编号： | 1003-6520(2005)02-0064-03 |
| 修稿时间： | 2004年4月6日 |
Study of Non-Thermal Microorganism Inactivation by Pulsed Electric Field |
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| WANG Liming,SHI Zinan,GUAN Zhicheng,CHENG Lun,LIAO Xiaojun,ZHONG Kui.Study of Non-Thermal Microorganism Inactivation by Pulsed Electric Field[J].High Voltage Engineering,2005,31(2):64-66. |
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| Authors: | WANG Liming SHI Zinan GUAN Zhicheng CHENG Lun LIAO Xiaojun ZHONG Kui |
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| Affiliation: | WANG Liming 1,SHI Zinan 1,GUAN Zhicheng 1,CHENG Lun 1,LIAO Xiaojun 2,ZHONG Kui 2 |
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| Abstract: | The non-thermal inactivating bacteria for liquid food in pulsed electric field (PEF) is studied in this paper. In the experiment, two types electrodes with plate and coaxial shapes are used to treat the carrot juice inoculated with beer yeast and colibacillus. The fraction of surviving cells of both bacteria in various conditions is tested through changing electric field strength and pulse number. The mechanism of inactivation bacteria is also discussed preliminarily. |
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| Keywords: | pulsed electric field beer yeast colibacillus the fraction of surviving cells |
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