摘要
目的建立基于全面稳定性指数(global stability index,GSI)理论预测庄河大骨鸡保质期的方法。方法基于恒温加速实验,测定大骨鸡于4、10、20、30℃储藏温度下的感官、汁液流失率、菌落总数和挥发性盐基氮变化规律,建立大骨鸡GSI保质期预测模型。结果计算得到的GSI值满足零级动力学模型。活化能和指前因子分别为17.07 kJ/mol和283。GSI实验值和预测值相对误差绝对值在20%范围内。通过GSI模型预测,获得大骨鸡在4、10、20、30℃下的保质期分别为5.8、5.0、3.9、3.1 d。结论建立的GSI预测模型在4~30℃储藏温度范围内能够有效预测大骨鸡的新鲜度。
Objective To establish a method for predicting the shelf life of Zhuanghe big bone chicken based on the global stability index(GSI)theory.Methods For the purpose of establishing GSI-based model,quality degradation trend of the chicken including sensory score,water activity,drip loss,total aerobic counts and volatile base nitrogen was monitored via accelerating testing at 4,10,20,30℃.Results The calculated results of GSI were satisfactorily described by a zero-order kinetic model.The activation energy and the corresponding pre-exponential constant of GSI were 17.07 kJ/mol and 283,respectively.Relative error absolute values between predicted and observed GSI values were all below 20%.The product shelf life at 4,10,20 and 30℃was calculated to be 5.8,5.0,3.9,3.1 d,respectively.Conclusion The established model based on GSI can effectively predict the freshness of Zhuanghe Dagu chicken at the range of 4-30℃during different temperatures storage.
作者
薛伟锋
侯辰侠
陈溪
曹文军
宁兴爽
刘明
刘水琳
刘东言
XUE Wei-Feng;HOU Chen-Xia;CHEN Xi;CAO Wen-Jun;NING Xing-Shuang;LIU Ming;LIU Shui-Lin;LIU Dong-Yan(Dalian Customs District P.R.China,Dalian 116600,China;China Inspection(Dalian)Test Technology Co.,Ltd.,Dalian 116600,China)
出处
《食品安全质量检测学报》
CAS
2020年第2期381-386,共6页
Journal of Food Safety and Quality
基金
辽宁省自然科学基金博士启动基金项目(2019-BS-008)。
关键词
庄河大骨鸡
保质期
温度
全面稳定性指数
Zhuanghe Dagu chicken
shelf life
temperature
global stability index
作者简介
通讯作者:薛伟锋,博士,主要研究方向为食品保质期预测模型。E-mail:xwf526@163.com。
