摘要
目的建立生乳中金黄色葡萄球菌的生长预测模型。方法采用GB/T4789.37—2008第三法,测定不同温度下金黄色葡萄球菌在生乳中的生长曲线,利用麦夸特法和通用全局优化法将曲线数据分别拟合Gompertz方程、Logistic方程、Richards方程、Weibull方程、Baranyi方程和Monod方程,确定最适方程,建立一级模型。同时应用响应面方程建立二级生长预测模型。结果金黄色葡萄球菌在生乳中的最适预测模型为Gompertz模型。结论通过与多模型比较,建立了金黄色葡萄球菌在生乳中的生长预测模型。为该菌在生乳中的风险评估理论体系的建立提供理论基础,也为乳制品的安全生产和流通提供了科学依据。
Objective To establish a model for predicting the growth of Staphylococcus aureus in raw milk. Method The growth curve of Staphylococcus aureus in raw milk under different temperatures was developed by the method of GB /T 4789. 37—2008. On fitting growth curves with Gompertz equation, Logistic equation, Richards equation, Weibull equation,Baranyi equation and Monod equation,the primary model was established by Levenberg-Marquardt and Universal Global Optimization,and the secondary predictive growth model was established by a response surface model. Results Gompertz model was the optimal model for predicting the growth of Staphylococcus aureus in raw milk. Conclusion A model for predicting the growth of Staphylococcus aureus in raw milk was built by comparing multiple models. The predictive model can provide theory basis for the risk assessment of Staphylococcus aureus in raw milk,and also can provide a scientific basis for safety production and circulation of dairy products.
出处
《中国食品卫生杂志》
北大核心
2010年第6期502-505,共4页
Chinese Journal of Food Hygiene
基金
黑龙江省卫生厅计划项目(2009-488)
关键词
金黄色葡萄球菌
生乳
预测模型
Staphylococcus aureus
Raw Milk
Predictive Model
