摘要
研究了固定化糖化酶型时间-温度指示器(TTI)的动力学性能和反应终点,并求得了TTI的活化能;同时研究了酸奶的活化能和货架期寿命。根据TTI与食品的活化能以及反应终点的匹配原则,在恒温及变温条件下进行匹配实验。结果表明,在恒温和变温2种条件下,1#TTI的活化能都满足与酸奶的匹配要求,并且反应终点误差在15%以内,能够比较准确地监测酸奶品质变化,从而预测酸奶的寿命。
The kinetics of immobilized glucoamylase time-teruperature indicators(TTIs)was studied,the activation energy and reaction endpoint of TTIs was achieved,with the research on yogurt activation energy and shelf life.According to the activation energy and ending point matching principle between TTIs and the perishable,the matching experiments were set up both at constant and variable temperature.As a result,1#TTI was verified to predict the shelf life of yogurt more accurately with the activation energy matching yogurt and the errors of reaction endpoint within15%based on experiments in yogurt quality monitoring.
作者
王琳
孟晶晶
李园锦
凌晨
钱静
WANG Lin;MENG Jingjing;LI Yuanjin;LING Chen;QIAN Jing(School of Mechanical Engineering,Jiangnan University,Wuxi Jiangsu 214122,China;Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology,Wuxi Jiangsu 214122,China)
出处
《包装学报》
2018年第1期46-53,共8页
Packaging Journal
基金
江苏省研究生科技与实践创新计划基金资助项目(SJCX17_0488)
关键词
固定化糖化酶
时间-温度指示器
活化能
酸奶
酸度
immobilized glucoamylase
time-temperature indicator
activation energy
yogurt
acidity
