果蔬电学特性的测试技术及影响因素研究进展-河南农业科学.PDF

※专题论述 食品科学 2012, Vol.33, No.19 321 1, 2 2 2 1,* 王瑞庆 ，冯建华 ，徐新明 ，张继澍 (1.西北农林科技大学生命科学学院，陕西 杨凌 712100 ； 2. 中华全国供销合作总社济南果品研究院，山东 济南 250014) 摘 要：果蔬产品电学特性及影响因素的研究，对于了解其加热特性、估算电磁场加热效率、设计加热和检测设 备、消除测试干扰因素有重要意义。概述果蔬电学特性基本原理及测试技术，总结内因如果蔬成分、结构、温度、 含水率和外因如测试频率等对果蔬电学特性的影响。 ：果实；蔬菜；电学特性；测试技术；影响因素；综述 Electrical Properties of Fruits and Vegetables: Introduction, Testing Techniques and Infl uencing Factors 1,2 2 2 1,* WANG Rui-qing ，FENG Jian-hua ，XU Xin-ming ，ZHANG Ji-shu (1. College of Life Sciences, Northwest A F University, Yangling 712100, China； 2. Jinan Fruit Research Institute, China Supply and Marketing Cooperatives, Jinan 250014, China) Abstract ：Electrical properties and infl uencing factors are important to the understanding of heating behaviors, heating effi ciency, heating and testing equipment design and infl uencing factor elimination for fruits and vegetables. In this paper, the principle and testing techniques of electrical properties for fruits and vegetables are described. Meanwhile, the infl uencing factors including compositions, structures, temperature and water content of fruits and vegetables as well as testing frequency are summarized. Key words ：fruit ；vegetable ；electrical properties ；testing technique ；influencing factor ；review 中图分类号：S183 文献标识码： A 文章编号：1002-6630(2012)19-0321-05 农产品电学特性的研究，自早期对小麦直流电阻 表达式为： 的测定[1] ，至今已有100多年，最广泛应用于谷物含水 ε ε j ε (1) 率测定[2] 。果蔬产品在人们健康和经济生活中占有重要