南通大学学报（自然科学版）

为摸索贮存环境对三乙酸甘油酯成分变化的影响,模拟了由3种不同的相对湿度和3个不同的温度组合而成的贮存环境,对三乙酸甘油酯分别进行28 d的贮存试验,并对其酸度及酯含量进行分析测试.实验结果表明:1)不同贮存环境下,三乙酸甘油酯酸度与贮存温度呈显著相关,与相对湿度不显著相关.当贮存温度为45℃时,随着时间的推移,酸度以二次曲线的方式迅速增加;当贮存温度为5℃和30℃时,酸度无明显变化.2)不同贮存环境下,三乙酸甘油酯酯含量均值和极值的变化皆不明显(均值极差为0.062%,极值极差为0.17%),且这些变化与贮存环境变化的关联强度系数仅为36.3%,关联强度不大.

In order to explore the influence of storage condition, the simulation lab was established based on three different relative humidity and three different temperature. The free acid content and triacetin content were detected respectively within 28 days′ experiments. The results showed that: 1)In different environment, the storge temperature was a significant factor affecting the free acid content, while the relative humidity was insignificant. At 45 ℃, as time went on, acidity increased rapidly with quadratic equation;at 5 ℃ and 30 ℃, acidity had no obvious changing. 2)For the triacetin content, the range of mean was 0.062%, the range of extremum was 0.17%. The mean and extremum of the triacetin content didn′t changed significantly. The strength of association between the triacetin content and storage environment was only 36.3%, which revealt that there was slight correlation.