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当前位置: 首页 > 文章 > 工艺参数对苹果变温压差膨化干燥过程中水分扩散的影响 核农学报 2013,27 (4) 49-57
Position: Home > Articles > Processing Parameters Effect on the Moisture Diffusivity of Apple Slices During Explosion Puffing Drying Journal of Nuclear Agricultural Sciences 2013,27 (4) 49-57

工艺参数对苹果变温压差膨化干燥过程中水分扩散的影响

作  者：
杨爱金;毕金峰;韩庆典;卢勇;刘璇;吕健;王轩
单  位：
中国农业科学院农产品加工研究所农业部农产品加工综合性重点实验室;临沂大学生命科学学院;临沂市农业委员会
关键词：
变温压差膨化干燥;苹果;水分扩散;干燥模型
摘  要：
利用非稳态菲克第二定律计算苹果片变温压差膨化干燥过程中水分扩散系数,讨论膨化温度、抽空温度和切片厚度对苹果片干燥过程中水分扩散的影响。采用Page、Henderson&Pabis和Logarithmic3种数学模型对苹果膨化干燥过程中水分的扩散进行了模型拟合,由模型统计参数平均偏差(MBE)、相对平均标准差(RMSE)、卡方(χ2)、模型拟合效率(EF)值及决定系数r2评价模型优劣。结果表明:Logarithmic模型能够很好地描述苹果片变温压差膨化干燥中水分扩散的过程(r2≥0.97)。试验设定工艺参数下,有效水分扩散系数Deff在98.034×10-12～274.165×10-12m2.s-1之间,并且有效水分扩散系数随膨化温度、抽空温度的升高而升高;随切片厚度的增加而降低。
译  名：
Processing Parameters Effect on the Moisture Diffusivity of Apple Slices During Explosion Puffing Drying
作  者：
YANG Ai-jin1 BI Jin-feng1 HAN Qing-dian2 LU Yong3 LIU Xuan1 LV Jian1 WANG Xuan1(1 Institute of Agro-Products Processing Science and Technology Chinese Academy of Agricultural Sciences/Comprehensive Key Laboratory of Agro-Products Processing,Ministry of Agriculture,Beijing 100193; 2 College of Life Science,Linyi University,Linyi,Shandong 2765005;3 Linyi Agriculture Committee,Linyi,Shandong 276000)
关键词：
Explosion puffing drying;Apple;Moisture diffusion;Drying model
摘  要：
The moisture diffusion coefficients of apple slices dried by explosion puffing method were estimated by Fick's second law(unsteady model).The effects of processing parameters on moisture diffusivity were investigated,including puffing drying temperature,vacuum drying temperature and thickness of apple slices.The diffusion models of Page,Henderson & Pabis and Logarithmic were applied to characterize the drying process,respectively.The statistic parameters of the mean bias error(MBE),the root mean square error(RMSE),the modeling efficiency(EF) and chi-square(x2) addition to the coefficient of determination r2 were used to evaluate the fitness of the models.The results showed that Logarithmic model could fit the experimental data well(r2≥0.97).The values of effective moisture diffusivity(Deff) were in the range of 98.034×10-12-271.165×10-12m2·s-1 under the experiment technological parameters.Moreover,the values of Deff increased with the rise of puffing temperature,vacuum drying temperature;and decreased with the increment of apple slice thickness.

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