摘要
为研究莲藕片真空微波干燥特性,探讨不同真空度、装载量和微波功率对莲藕片薄层真空微波干燥过程的影响。根据试验数据建立莲藕片薄层真空微波干燥水分比与干燥时间关系的动力学模型,并对模型进行拟合试验,最后计算莲藕片薄层真空微波干燥条件下的有效扩散系数。结果表明,莲藕片薄层真空微波干燥过程符合Page模型,经验证,模型预测值与试验值拟合良好;莲藕片薄层真空微波干燥有效扩散系数在0. 508×10-6~6. 556×10-6m~2/s范围内。Page模型适合描述莲藕片薄层真空微波干燥过程。
引文
[1]寿森炎,宰文珊,黄锡志.莲藕膨大过程中褐变酶活性的变化[J].核农学报,2005,19(4):279-281.
[2]Xing Y G,Li X H,Xu Q L,et al.Effects of chitosan-based coating and modified atmosphere packaging(MAP)on browning and shelf life of fresh-cut lotus root(Nelumbo nucifera Gaerth)[J].Innovative Food Science and Emerging Technologies,2010,11(4):684-689.
[3]刘建学.全藕粉喷雾干燥工艺试验研究[J].农业工程学报,2006,22(9):229-231.
[4]Cui Z W,Xu S Y,Sun D W.Microwave-vacuum drying kinetics of carrot slices[J].Journal of Food Engineering,2004,65(2):157-164.
[5]江宁,刘春泉,李大婧,等.甘薯片真空微波干燥工艺的优化[J].中国食品学报,2011,11(7):81-88.
[6]黄姬俊,郑宝东.香菇微波真空干燥特性及其动力学[J].福建农林大学学报(自然科学版),2010,39(3):319-324.
[7]刘春泉,严启梅,江宁,等.杏鲍菇真空微波干燥特性及动力学模型[J].核农学报,2012,26(3):494-499.
[8]朱德泉,曹成茂,朱琳,等.菠萝片微波真空干燥特性及工艺参数优化[J].粮油食品科技,2009,17(1):52-55,59.
[9]魏巍,李维新,何志刚,等.绿茶微波真空干燥特性及动力学模型[J].农业工程学报,2010,26(10):367-371.
[10]Figiel A.Drying kinetics and quality of vacuum-microwave dehydrated garlic cloves and slices[J].Journal of Food Engineering,2009,94(1):98-104.
[11]Bal L M,Kar A,Satya S,et al.Drying kinetics and effective moisture diffusivity of bamboo shoot slices undergoing microwave drying[J].Food Science&Technology,2010,45(11):2321-2328.
[12]zbek B,Dadali G.Thin-layer drying characteristics and modelling of mint leaves undergoing microwave treatment[J].Journal of Food Engineering,2007,83(4):541-549.
[13]种翠娟,朱文学,刘云宏,等.胡萝卜薄层干燥动力学模型研究[J].食品科学,2014,35(9):24-29.
[14]彭桂兰,吴文福,陈晓光,等.萝卜丝薄层干燥试验及其数学模型的建立[J].农业机械学报,2005,36(3):79-81,94.
[15]唐伟琴.木瓜的薄层微波干燥特性实验研究[D].南宁:广西大学,2006:18-20.
[16]中华人民共和国卫生部.食品中水分的测定:GB 5009.3-2010[S].北京:中国标准出版社,2010.
[17]雷小琴.香蕉片微波真空干燥特性及干燥工艺的研究[D].福州:福建农林大学,2010:8-17.
[18]胡庆国,卜召辉,陆宁.金针菇真空微波干燥动力学模型的研究[J].食品与机械,2010,26(5):48-50,77.
[19]Sharma G P,Prasad S,Chahar V K.Moisture transport in garlic cloves undergoing microwave-convective drying[J].Food and Bioproducts Processing,2009,87(1):11-16.
[20]Evin D.Thin layer drying kinetics of Gundelia tournefortii L[J].Food and Bioproducts Processing,2012,90(2):323-332.
[21]胡庆国.毛豆热风与真空微波联合干燥过程研究[D].无锡:江南大学,2006:72-74.