皱皮木瓜热风干燥特性及其动力学模型的研究  

Hot-air drying characteristicsand dynamic model of Chaenomeles spiciosa(Sweet)Nakai

作　　者：崔莉[1] 杜利平[1,2] 王岱杰[1] 张冲[1] 刘伟[1] 王晓[1] 

机构地区：[1]山东省中药质量控制技术重点实验室/山东省分析测试中心,济南250014 [2]食品科学与工程学院,山东农业大学,泰安271018

出　　处：《中国食品添加剂》2017年第7期96-102,共7页China Food Additives

基　　金：山东省重点研发计划(2015GSF119021);山东省科学院青年基金(青基合字2014第5号);泰山学者工程专项经费资助

摘　　要：为促进皱皮木瓜的综合开发利用,探讨了其干燥加工过程中的水分变化,在不同温度对不同厚度的木瓜片进行热风干燥,得到干燥曲线、干燥速率曲线,分析其干燥特性,拟合建立不同干燥条件下的失水动力模型,结果表明:降速阶段为皱皮木瓜热风干燥的主要阶段,Page模型对干燥过程的拟合性较好,模型的预测值与实验值吻合性好,在40~60℃内,皱皮木瓜干燥过程中的有效扩散系数为4.55945×10-9~6.38323×10-9 m2/s,且随着温度的升高而增大,平均活化能Ea为14.15 KJ/mol。该研究结果对皱皮木瓜采后生产具有一定的指导意义。To improve the overall research and utilization of Chaenomeles spiciosa （Sweet）Nakai, the moisture change during drying process were investigated. The drying properties with varied thickness were studied at the different temperatures by drying curves and drying rate curves obtained duringhot-air drying process. Furthermore, several water-loss kinetic models were adoped to describe the characteristics of drying quantitatively.The experimental results showed that the drying process mainly occurred in the falling rate periods. According to statistical parameters, the Page model predicted and described the drying process more accurately than others.The value of moisture effective diffusivity （Deft）was ranged from 4.55945×10^-9～6.38323×10^-9 m^2/s, and it increased with the increasing of drying temperature. The activation energy was 14.15 KJ/mol. The research provides a guidance in further study of Chaenomeles spiciosa （ Sweet）Nakai.

关 键 词：皱皮木瓜 干燥特性 动力学模型 

分 类 号：S661.6[农业科学—果树学] S609.9[农业科学—园艺学]