稻谷热风、微波干燥品质与玻璃化转变研究
Transactions of the Chinese Society for Agricultural Machinery（2015）
Abstract
以函数拟合、近红外检测及发芽率测定,研究稻谷热风、微波干燥的去水性能及其蛋白质、直链淀粉含量与出芽品质;结合TG/DSC测试,探讨2种热源干燥稻谷的玻璃化转变对其干燥后品质的影响.结果表明:以对数函数拟合稻谷热风、微波干燥去水性能的准确度高;经2种热源干燥稻谷的蛋白质、淀粉含量过程差异不显著;但热风干燥稻谷初期蛋白质含量差异明显.鲜稻谷发芽率显著低于其经热风、微波干燥后的发芽率,三者分别为0.65±0.19、0.93±0.03、0.77±0.02.随含水率降低,经热风、微波干燥稻谷的热重损失与热流则呈不同趋势变化,二者中点温度均减小,综合影响干谷品质.
MoreKey words
Hot air drying, Glass transition temperature,Rice, Drying quality, Microwave drying
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