鲐鱼中大肠杆菌生长预测模型的建立  

Construction of growth predictive model of Escherichia coli in Pneumatophorus japonicus

作　　者：唐艳[1] 黄薇[1] 张宾[1] 邓尚贵[1] 

机构地区：[1]浙江海洋学院食药学院医学院,舟山316000

出　　处：《食品科技》2012年第5期313-316,共4页Food Science and Technology

基　　金：国家国际合作项目(2010DFB34220);国家自然科学基金项目(31071628);浙江省优先主题重点项目2011C13027-2;浙江省大学生新苗人才计划项目(2010R411041)

摘　　要：通过对不同温度条件下鲐鱼大肠杆菌生长规律的研究,应用CurveExpert1.3软件建立了鲐鱼一级和二级模型。结果表明8℃条件下,Gompertz模型的拟合度最好,其相关系数为0.9835,标准差为0.3108;12、16℃条件下,Logistic模型的拟合度最高,相关系数分别为0.9932、0.9858,标准差分别为0.3190、0.5506。二级模型采用平方根模型拟合,√Umaλ=0.0241T-0.0895,Tmin=3.71℃,R2=0.9966。通过模型验证,预测值和观测值的残差值均在±0.01范围内,偏差因子和精准因子分别为0.986和1.016,均接近1。模型具有可靠性。研究结果将为企业合理控制加工流程时间和环境温度以及制定相关标准提供理论依据。Research on the growth law of Escherichia coli in Pneumatophorus japonicus at different temperature to established the primary and secondary model of E.coli.The results showed that the Gompertz model was apply to fit it best at 8 ℃,the correlation coefficient and standard error were 0.9835,0.3108;the Logistic model’s fitting degree was the highest at 12 ℃ and 16 ℃,the correlation coefficient were 0.9932,0.9858 and the standard error were 0.3190,0.5506.The secondary growth model of Escherichia coli in Pneumatophorus japonicus was described by the square root model,～（1/2）Umaλ=0.0241T0.0895,Tmin=3.71 ℃,R2=0.9966.Validation of the models showed that the residual difference of predicted and observed value was within ±0.01,and the value of bias factor and accuracy factor were 0.986 and 1.016,the predictive models are highly reliable.The results of this study will provide theoretical basis for practical production,it could help the enterprise to control processing process time reasonable and make corresponding standard.

关 键 词：鲐鱼 大肠杆菌 预测模型 

分 类 号：TS201.3[轻工技术与工程—食品科学]