摘要
以气调包装冷却牛肉为研究对象,研究储藏在0、5、10℃温度条件下气调包装冷却牛肉中特定腐败菌(假单胞菌)的生长变化规律。通过Matlab7.0软件拟合不同温度条件下假单胞菌的生长情况,得到假单胞菌生长的Gompertz模型参数;利用响应面方程建立假单胞菌生长的二级模型;由平方根方程建立了温度对假单胞菌生长动力学影响的数学模型。进而验证0～10℃低温条件下假单胞菌的生长动力学模型。结果表明:建立的Gompertz方程拟合相关系数均在0.99以上,二级模型偏差度和准确度均在0.90～1.05之间,说明建立的一级和二级模型能够真实有效地预测0～10℃条件下气调包装冷却牛肉中假单胞菌的生长情况。
In this study,the growth models of Pseudomonas,one of the specific spoilage organisms,in chilled beef during storage at different temperatures in modified atmosphere packaging（MAP） environment were developed by Matlab7.0 to obtain Gompertz model parameters.A secondary model describing the growth of this specific spoilage organism and a kinetic growth model with temperature as the independent variable following the response surface and the square root equations,respectively,were constructed so as to validate the kinetic growth model at low temperatures ranging from 0 to 10 ℃.All the constructed Gompertz model displayed a correlation coefficient exceeding 0.99.The bias factor and accuracy of the secondary model were both between 0.90 and 1.05.These data demonstrate that the constructed primary and secondary models can both effectively predict the growth situation of Pseudomonas in chilled beef during storage in MAP environment at a temperature varying from 0 to 10 ℃.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2010年第21期213-217,共5页
Food Science
基金
"十一五"国家科技支撑计划项目(2007BAD52B05)
上海市科委重点科技攻关项目(10391902300)
关键词
冷却牛肉
气调包装
预测模型
特定腐败菌
假单胞菌
chilling beef
modified atmosphere packaging
prediction model
specific spoilage organisms
Pseudomonas spp.
作者简介
胡沽云（1985-），女，硕士研究生，研究方向为食品生物技术。E-mail：hjy923@126．com
通信作者：欧杰（1964-），男，副教授，硕士，研究方向为食品生物技术。E-mail：jou@shou．edu．cn
