基于响应面的黄花菜冷冻干燥工艺参数优化  

Optimization of Parameters for Vacuum Freeze-drying of Daylily Flower at Low Energy Consumption

作　　者：郭向明[1,2] 崔清亮[1] 李斐[1] 贠慧星[1] 

机构地区：[1]山西农业大学工学院,山西太谷030801 [2]中国热带农业科学院农业机械研究所,广东湛江524091

出　　处：《农机化研究》2013年第12期120-124,共5页Journal of Agricultural Mechanization Research

基　　金：山西省科技攻关计划项目(20080311051);山西农业大学科研启动基金项目(XB2008014);国家自然科学基金项目(30771242)

摘　　要：为确定黄花菜低能耗冷冻干燥工艺参数,以冷冻干燥单位水分能耗为响应值,以加热板温度、冻干室压力和装盘量为试验因素,采用3因素5水平响应面设计法进行试验。结果表明:3个因素对黄花菜冷冻干燥能耗影响的大小顺序依次为装盘量、加热板温度、冻干室压力;冷冻干燥黄花菜时单位水分能耗最低的最优工艺参数为加热板温度78.0℃、冻干室压力40.0Pa、装盘量3 680.6g/m2、单位水分能耗为142.705 0MJ/kg。研究结果可为黄花菜实现低能耗冷冻干燥提供技术依据。In order to determine the optimal parameters for low energy consumption in vacuum freeze-drying daylily flower, an experiment was designed according to the method of response surface analysis of three factors and five levels. Selected variables were temperature of heating plate, chamber pressure and loading capacity of the plate as well as freeze -drying energy consumption per unit moisture content taken as the response variable. The results indicated that the signif- icant experimental factors on energy consumption during vacuum freeze-drying were： the plate loading capacity, heating plate temperature and chamber pressure. The optimum parameters were 78.0℃ ,3680.6 g/m2 , 40.0 Pa respectively and the response value 142. 705 MJ/kg. The results would be valuable for vacuum freeze-drying daylily flower at low energy consumption.

关 键 词：黄花菜 冷冻干燥 响应面法 能耗 

分 类 号：S375[农业科学—农产品加工] TQ028.673[农业科学—农艺学]