初始菌落对鸭肉假单胞菌生长预测模型影响研究

摘要

Based on the cold fresh duck with modified atmosphere packaging, in order to simulate the condition that the initial colony count is different in different batch cold fresh duck during the process of logistics and pro-cessing in marketing,the cold fresh duck meat was stored at incubator for 4℃for 0,1,2,3 d respectively to pro-duce four differents initial colony count of cold fresh duck material in the paper,and the effect of the differences of the initial colony count on the growth prediction model on Pseudomonas was studied. The results indicated that the increase number of the initial bacteria made the specific growth rate of Pseudomonas prolonged but the lag phase decreased;The predicted value of Pseudomonas by different initial colony number forecast and the measured value was not significant in 3 d-7 d.%以气调包装的分割鸭肉为研究对象，通过分别将同一批次的冷鲜鸭肉在4℃的低温培养箱中放置0、1、2、3d后形成4种不同初始菌落数的冷鲜鸭肉模拟实际销售环节中由于批次加工与物流的差异造成的冷鲜鸭肉产品初始菌落数的差异特点，研究初始菌落数差异对气调包装冷鲜鸭肉中假单胞菌和肠杆菌生长预测模型影响，结果表明初始菌落数的增加对冷鲜鸭肉制品中假单胞菌的比生长速率有延长的效果，延滞期有缩短的作用。通过不同初始菌落数预测3~7d的预测值与实测值间差异均不显著。