枸杞的微波干燥特性及其对品质的影响  

Microwave Drying Characteristics of Chinese Wolfberry and the Effect on the Quality of Chinese Wolfberry

作　　者：马林强[1] 慕松[1] 李明滨[2] 王燕昌[3] 马鹏跃 

机构地区：[1]宁夏大学机械工程学院,宁夏银川750021 [2]宁夏大学新能源中心,宁夏银川750021 [3]宁夏大学物理电气信息学院,宁夏银川750021 [4]同心县农牧局,宁夏同心751300

出　　处：《农机化研究》2015年第5期208-211,共4页Journal of Agricultural Mechanization Research

基　　金：国家自然科学基金项目(11262018);宁夏回族自治区科技攻关项目(ykx-11-296)

摘　　要：为了缩短枸杞的干燥时间、节约干燥成本,运用微波试验装置,通过选择不用的干燥功率和物料铺放厚度,研究了枸杞微波干燥特性及其对干燥后产品品质的影响。研究结果表明:微波干燥作用于枸杞干燥降速干燥阶段可以大幅缩短枸杞干燥周期,微波组合干燥较自然晾晒缩短时间约65h,约占自然晾晒干燥周期的72%;干燥功率和物料层厚度是影响微波干燥时间的重要因素,微波功率越大,物料层厚度越小,则物料干燥时间越短;不同的微波干燥参数对干后产品品质有不同影响,微波功率为1k W,当物料层厚度平铺为2cm时,干燥后产品多糖保存率和感官品质最好。In order to reduce drying time and cost in Chinese wolfberry drying process , experimental study on characteris-tics of microwave drying of Chinese wolfberry and the influence of microwave drying conditions on the quality of Chinese wolfberry and energy consumption were conducted using home-made microwave drying and testing device by choosing dif-ferent power of microwave and thickness of materials .Experimental results showed that the microwave drying can signifi-cantly shorten the Chinese wolfberry ’ s drying cycle in the falling rate drying stage .The drying time of the combination of microwave was shorten about 65h, 72% of the whole drying cycle ,than the natural air drying .The power of microwave and the thickness of materials are the important factors that affect the microwave drying time .With the increase of micro-wave power and the decrease of material thickness ,the material drying time reduced .Under different parameters of micro-wave drying , the dry quality of Chinese wolfberry was different .Heating power 1 kW and material thickness 2 cm,under these conditions the higher edible quality can be maintained after drying process , and the retention rate of lycium barba-rum polysaccharide was high .

关 键 词：微波干燥 枸杞 干燥特性 品质 

分 类 号：S375[农业科学—农产品加工]