摘要
将米糠置于不同温度下进行储藏实验,探讨在保质期内,不同储藏温度对米糠酸价(AV)和过氧化值(POV)影响,以温度-AV/POV之间的一级化学反应动力学模型为基础,建立温度与保质期的关系式,预测米糠在不同储藏温度下的保质期。结果表明:米糠保质期(t)与储藏温度(T)之间存在对数关系,对数方程为:lnt=-0.031 3T+4.959 2。根据对数方程,代入不同的温度T,可推算预测相应的米糠保质期。
The rice bran was stored in different temperature.The effect of different storage temperatures on acid value(AV)and peroxide value(POV)of rice bran was discussed.The relationship between tem-perature and storage life was set based on the temperature -AV /POV first order chemical reaction kinet-ics model to predict the storage life of rice bran under different storage temperature.The result showed:there was a logarithmic relationship between the storage life (t)of rice bran and storage temperature (T),the relation is:lnt =-0.031 3T +4.959 2,the storage life can be calculated by substituting dif-ferent temperature based on the relation.
出处
《粮油食品科技》
2015年第3期105-109,共5页
Science and Technology of Cereals,Oils and Foods
关键词
动力学模型
保质期
米糠
dynamic model
storage life
rice bran
