食品科学 ›› 2007, Vol. 28 ›› Issue (9): 433-437.

• 生物工程 • 上一篇    下一篇

热死环丝菌生长预测模型的建立

 傅鹏, 马昕, 周康, 程万鹏, 李平兰   

  1. 中国农业大学食品科学与营养工程学院; 宁夏出入境检验检疫局; 山西农业大学食品科学与工程学院; 中国农业大学食品科学与营养工程学院 北京100083; 宁夏银川750000; 北京100083; 山西太谷030801;
  • 出版日期:2007-09-15 发布日期:2011-11-22

Development of Models to Predict Growth of Brochothrix thermosphacta

 FU  Peng, MA  Xin, ZHOU  Kang, CHENG  Wan-Peng, LI  Ping-Lan   

  1. 1.College of Food Science and Nutritional Engineering,China Agricultural University,Beijing 100083,China;2.Ningxia Entry-exit Inspection and Quarantine Bureau,Yinchuan 750000,China;3.College of Food Science and Engineering,Shanxi Agricultural University,Taigu 030801,China
  • Online:2007-09-15 Published:2011-11-22

摘要: 针对引起冷却肉腐败的优势微生物热死环丝菌,以分离得到的S-8菌株作为受试菌株,研究了0~10℃低温条件下热死环丝菌S-8的生长情况。利用SAS程序拟和不同温度条件下的生长情况,经过比较发现,Gompertz模型比线性模型能更好地拟合热死环丝菌的生长,从而得到了其生长的Gompertz模型参数;利用平方根模型对其的最大比生长速率平方根-温度(U(1/2)-T)进行拟合,得到热死环丝菌S-8生长的二级模型:U(1/2)=0.1192(T+6.00),T∈[0,10];利用培养基数据,冷却肉产品数据和温度波动条件下的数据对所得到的二级模型进行验证,计算得到总的偏差因子和准确因子分别为0.982和1.223,结果表明二级模型能真实快速有效地预测冷链条件下冷却肉中热死环丝菌的生长。

关键词: 冷却肉, 热死环丝菌, 温度, 预测模型

Abstract: Brochothrix thermosphacta is the major spoilage microorganism in chilling pork.Based on one of the isolated strain S-8 from chilling pork,its status of growth from 0~10 ℃ was studied.By the SAS program and the status of growth at different temperatures,compared to linear model,Gompertz model predicted well the growth of Brochothrix thermosphacta,and gained its parameter in Gompertz model;The secondary model of Brochothrix thermosphacta gained by square-root model was described by the following equation:U(1/2)=0.1192(T+6.00),T∈[0,10];Based on the data from experiments,the average bias factor and accuracy factor were 0.982 and 1.223 respectively,and this result showed that the secondary model could be a useful tool for predicting growth of Brochothrix thermosphacta from the temperature history of chilling pork.

Key words: chilling pork, Brochothrix thermosphacta, temperature, predictive models