鲜切怀山药片微波干燥特性及品质研究  

Microwave-drying Characteristics and Quality of Cut Dioscorea opposite Slices

作　　者：任广跃[1] 化春光[1] 段续[1] 朱文学[1] 

机构地区：[1]河南科技大学食品与生物工程学院,河南洛阳471003

出　　处：《食品科学》2010年第22期203-206,共4页Food Science

基　　金：河南省重点科技攻关计划项目(092102110023)

摘　　要：研究微波功率、单位质量微波功率和切片厚度对鲜切怀山药片干燥特性的影响。采用三因素三水平(耗能功效、干燥速率、多糖得率)正交试验,对鲜切怀山药片的微波干燥工艺参数进行优化。结果表明:鲜切怀山药片微波干燥过程中升速、恒速和降速三个阶段明显,其最佳工艺参数为微波功率600W、单位质量微波功率8W/g、切片厚度5mm。The effects of microwave power, microwave power per unit mass and slice thickness on drying characteristics of cut Dioscorea opposita were investigated in this paper. The optimal drying processing was explored through orthogonal experiments by evaluating energy efficiency, drying rate and polysaccharide content. Results showed that the drying process exhibited a three-phase process including increasing speed, constant speed and decreasing speed phases. The optimal processing parameters were microwave power of 600 W, microwave power per unit mass of 8 W/g and slice thickness of 5 mm. These studies provide a theoretical reference for microwave drying of cut Dioscorea opposite slices.

关 键 词：怀山药 微波干燥 特性 多糖 品质 

分 类 号：TS255.36[轻工技术与工程—农产品加工及贮藏工程]