靳志强,王顺喜,韩培.微波杀灭霉变玉米中寄生曲霉动力学模型[J].农业机械学报,2011,42(12):148-153,170.
Jin Zhiqiang,Wang Shunxi,Han Pei.Inactivation Kinetics Model of Aspergillus parasiticusin Mouldy Maize by Microwave Processing[J].Transactions of the Chinese Society for Agricultural Machinery,2011,42(12):148-153,170.
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微波杀灭霉变玉米中寄生曲霉动力学模型   [下载全文]
Inactivation Kinetics Model of Aspergillus parasiticusin Mouldy Maize by Microwave Processing   [Download Pdf][in English]
  
DOI:10.3969/j.issn.1000-1298.[year].[issue].[sequence]
中文关键词:  寄生曲霉  微波杀菌  线性模型  Weibull模型
基金项目:“十二五”国家科技支撑计划资助项目(2011BAD26B04)
作者单位
靳志强 中国农业大学,长治学院 
王顺喜 中国农业大学 
韩培 中国农业大学 
中文摘要:为描述微波对霉菌的杀菌过程和预测杀菌效果,建立了微波对霉变玉米中寄生曲霉孢子的杀菌动力学模型。在50~75℃的微波加热条件下获得了寄生曲霉孢子的致死曲线。选取线性模型、Weibull模型和Weibull简化模型来拟合微波杀菌的动力学过程,以决定系数、均方误差、精确因子和偏差因子作为模型拟合度优劣的评判指标。结果表明,Weibull模型较线性模型能更好地拟合微波处理下寄生曲霉孢子失活动力学变化;Weibull模型简化后与原模型具有相似的拟合性,可有效预测特定温度-时间组合下的微波灭菌效果;通过Weibull模型预测微波杀菌时间可避免线性模型导致的杀菌不彻底或者过度杀菌的现象。
Jin Zhiqiang  Wang Shunxi  Han Pei
China Agricultural University,Changzhi College;China Agricultural University;China Agricultural University
Key Words:Aspergillus parasiticus, Microwave sterilization, Linear model, Weibull model
Abstract:The inactivation models of Aspergillus parasiticus in mouldy maize by microwave processing were studied in order to describe and predict the inactive effects. Aspergillus parasiticus spores were inactivated under 50~75℃ by microwave processing, then the survival curves were determined. Linear, Weibull and reduced Weibull models were selected to fit the inactivation kinetics of Aspergillus parasiticus spores. Accuracy factor, Bias factor, mean square error and regression coefficients were used to compare the goodness of fit of the linear, Weibull and reduced Weibull models. The results suggested that Weibull model could provide better fit to the inactivation of Aspergillus parasiticus spores by microwave processing than linear model. The reduced Weibull model produced a fit as good as the original Weibull model and lead to an improvement of the robustness of the model, which would be beneficial to select optimum combinations of temperature and time to obtain the desired target levels of spores inactivation. Incomplete or excessive sterilization could be avoided when Weibull model was used to predict microwave sterilization time instead of linear model.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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