摘要
利用功率分别为710、475、160W的微波对样品进行微波干燥,同时分别在40、50、60℃的条件下进行热风干燥实验对比。考察样品的干燥特性,并引入薄层干燥模型进行数值分析。结果表明,Page模型很好地预测和描述了样品的干燥特性。应用Fick扩散模型,计算得出微波干燥的有效扩散系数分别为2.9668×10-8(710W)、1.7023×10-8(475W)、1.1028×10-8(160W);热风干燥的有效扩散系数分别为0.0811×10-8(40℃)、0.1135×10-8(50℃)、0.1621×10-8(60℃)。
Thin layer drying characteristics of paprika powder were investigated in microwave drying at powers of 710, 475, and 160 W and were compared with those in traditional air dying at 40, 50 and 60℃. Page model exhibited good prediction according to mathematical analysis of thin layer drying model. Meanwhile, moisture transfer from paprika powder was described by applying Fick' s diffusion model. The effective diffusion coefficients of moisture transfer were 2.9668 ×10^-8 (710 W), 1.7023 ×10^-8 (475 W) and 1.1028×10^-8 (160 W) by microwave drying, 0.0811×10^-8(40℃), 0.1135 ×10^-8 (50℃) and 0.1621 ×10^-8(60 ℃ ) by hot-air drying, respectively.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2009年第19期65-69,共5页
Food Science
基金
上海市科学技术委员会攻关项目(063919136)
上海海洋大学研究生科研基金项目(A-2501-09-0000-87096)
关键词
辣椒粉
微波干燥
干燥特性
薄层干燥模型
paprika powder
microwave drying
drying characteristics
model of thin-layer drying