| 超高压对双孢蘑菇的杀菌效果和动力学的研究 |
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| 引用本文： | 易建勇,董鹏,丁国微,王婷婷,胡小松,张燕. 超高压对双孢蘑菇的杀菌效果和动力学的研究[J]. 食品工业科技, 2012, 33(9): 78-81 |
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| 作者姓名： | 易建勇 董鹏 丁国微 王婷婷 胡小松 张燕 |
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| 作者单位： | 国家果蔬加工工程技术研究中心,中国农业大学食品科学与营养工程学院,农业部果蔬加工重点开放实验室,北京100083 |
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| 基金项目： | 国家“十二五”863计划项目(2011AA100801);国家自然基金项目(30972067) |
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| 摘 要： | 以细菌总数、大肠菌群、酵母菌和霉菌数为对象,研究了超高压(High hydrostatic pressure,HHP)处理对双孢蘑菇(Agaricus bisporus)的杀菌效果和杀菌动力学。双孢蘑菇在300、400、500、600MPa压力下,室温下分别用HHP处理2.5～25min。结果表明:随压力的升高和时间的延长,杀菌效果增强;霉菌、酵母对压力较为敏感,400MPa处理2.5min可将其全部杀死;300MPa处理2.5min可完全杀灭双孢蘑菇中的大肠菌群。应用Weibull模型对不同处理条件下双孢蘑菇的杀菌效果进行拟合,拟合动力学曲线的决定系数R2均大于0.97,拟合效果较好。提出了双孢蘑菇的HHP杀菌的最优杀菌工艺参数,即600MPa处理5min,该条件即可以有效杀灭双孢蘑菇中的微生物。
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| 关 键 词： | 超高压 蘑菇 杀菌 工艺参数 Weibull模型 |
Study on effect of high hydrostatic pressure on microbial inactivation and inactivation kinetics in mushroom |
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| YI Jian-yong,DONG Peng,DING Guo-wei,WANG Ting-ting,HU Xiao-song,ZHANG Yan. Study on effect of high hydrostatic pressure on microbial inactivation and inactivation kinetics in mushroom[J]. Science and Technology of Food Industry, 2012, 33(9): 78-81 |
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| Authors: | YI Jian-yong DONG Peng DING Guo-wei WANG Ting-ting HU Xiao-song ZHANG Yan |
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| Affiliation: | *(National Engineering Research Centre for Fruit and Vegetable Processing,College of Food Science and Nutritional Engineering,China Agricultural University,Key Laboratory of Fruits and Vegetables Processing,Ministry of Agriculture,Beijing 100083,China) |
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| Abstract: | Effect of high hydrostatic pressure(HHP)on microbial inactivation and inactivation kinetics in fresh mushroom(Agaricus bisporus)was studied.Inactivation of aerobic bacteria,mold & yeast as well as coliforms at various pressure levels(300～600MPa)for 2.5～25min treatments were investigated.The results showed that the effects of inactivation were improved with the pressure increasing and prolonging the holding time.The mould & yeast and coliforms were more sensitive to HHP than aerobic bacteria,and they were inactivated completely at 400MPa for 2.5min.The Weibull model was used to analyze the survival curves.The coefficients of determination(R2)were all higher than 0.97 which indicated that the Weibull model fit the microbial inactivation kinetics curve well.Commercial sterilization of mushroom could be achieved by HHP treatment at 600MPa for 5min. |
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| Keywords: | high hydrostatic pressure mushroom microbial inactivation processing parameters Weibull model |
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