摘要：为了明确冷藏温度下牛乳中单增李斯特菌数的变化规律，将单增李斯特菌接种在一种市售乳制品饮料中并于4℃下保存，在乳制品保质期内对单增李斯特菌进行计数，并通过Gompertz模型、Baranyi模型对牛乳中的单增李斯特菌数的变化进行拟合。由数学检验参数平方根误差（RMSE）、偏差因子（BF）、准确性因子（AF）和标准预测误差（SEP）比较结果显示，Gompertz模型拟合性和准确性高，可作为牛乳中单增李斯特失活模型推广应用。

关键词 单增李斯特菌；失活模型；数学检验

Abstract:In order to study the variation of active listeria monocytogenes numbers in milk under cold temperature. Add listeria monocytogenes in a dairy drinks and preserve it under 4℃.Active LM numbers were detected during the shelf life.Then Gompertz, Baranyi models were applied to curves of active LM. With lower root-mean-squares error(RMSE) and acceptable bias factor(BF) and accuracy factor(AF)and standard error of prediction(SEP). Comparison results showed that Gompertz model might be a applicable method and reference,can be used widely.

Keywords Listeria monocytogenes    The deactivation model    Math test