Electrical Properties of Fruits and Vegetables: Introduction, Testing Techniques and Influencing Factors

Abstract

Abstract: Electrical properties and influencing factors are important to the understanding of heating behaviors, heating efficiency, heating and testing equipment design and influencing 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 influencing 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

CLC Number:

S183

Rui-qing WANG Ji-Shu ZHANG. Electrical Properties of Fruits and Vegetables: Introduction, Testing Techniques and Influencing Factors[J]. FOOD SCIENCE, 2012, 33(19): 321-325.

References

[1] BRIGGS LJ. An electrical resistance method for the rapid determination of the moisture content of grain[J]. Science, 1908, 28: 810.
[2] VENKATESH MS, RAGHAVAN GSV. An overview of dielectric properties measuring techniques[J]. Canadian Biosystems Engineering, 2005, 47: 7.15-7.30.
[3] PIYASENA P, DUSSAULT C, KOUTCHMA T, et al. Radio frequency heating of foods: principles, applications and related properties—a review[J]. Critical Reviews in Food Science and Nutrition, 2003, 43(6): 587-606.
[4] ZHANG MIN. and WILLISON JHM. Electrical impedance analysis in plant tissues: a double shell model[J]. Journal of Experimental Botany, 1991, 42(11): 1465-1475.
[5] MIZUKAMI Y, YAMADA K, SAWAI Y, et al. Measurement of Fresh Tea Leaf Growth Using Electrical Impedance Spectroscopy[J]. Agricultural Journal, 2007, 2(1): 134-139.
[6] WANG S, TANG J, CAVALIERI RP. et al. Differential heating of insects in dried nuts and fruits associated with radio frequency and microwave treatments[J]. Biosystems Engineering, 2003, 46(4): 1175-1182.
[7] GUO W, NELSON SO. TRABELSI S. et al. 10-1800-MHz dielectric properties of fresh apples during storage[J]. Journal of Food Engineering, 2007, 83(4): 562-569.
[8] HLAVACOVA Z. Low frequency electric properties utilization in agriculture and food treatment [J]. Res Agr Eng, 2003, 49(4): 125-136.
[9] DUNLAP JR, MAKOWER B. Radio-frequency dielectric properties of dehydrated carrots. application to moisture determination by electrical methods[J]. The Journal of Physical Chemistry, 1945, 49(6): 601-622.
[10] FENG H., TANG J, CAVALIERI RP. Dielectric properties of dehydrated apples as affected by moisture and temperature[J]. Transactions of the ASAE, 2002, 45(1): 129-135.
[11] TULASIDAS TN, RAGHAVAN GS, VAN DE VOORT F, et al. Dielectric properties of grapes and sugar solutions at 2.45 GHz[J]. The Journal of microwave power and electromagnetic energy: a publication of the International Microwave Power Institute, 1995, 30(2): 117.
[12] NELSON S.O. Dielectric properties of some fresh fruits and vegetables at frequencies of 2.45 to 22 GHz[J]. Transactions of the ASABE, 1983, 26 (2): 613-616.
[13] RYYNNEN S. The electromagnetic properties of food materials: a review of the basic principles[J]. Journal of Food Engineering, 1995, 26(4): 409-429.
[14] MUDGETT RE., GOLDBLITH S.A., WANG D.I.C., et al. Prediction of dielectric properties in solid foods of high moisture content at ultrahigh and microwave frequencies[J]. Journal of Food Processing and Preservation, 1977, 1(2): 119-151.
[15] MUDGETT RE. Performance models for continuous dielectric pasteurization of milk[J]. Journal of Food Process Engineering, 1979, 3(4): 217-228.
[16] NELSON SO. Electrical properties of grain and other food materials. Journal of Food Processing and Preservation, 1978, 2(2): 137-154.
[17] 张立彬, 陈子辰. 苹果内部品质的电特性无损检测研究[J]. 农业工程学报, 2000, 16(3): 104-106.
[18] DEBYE PJW. and DOVER, Polar molecules. Vol. 8. 1929: Dover New York.
[19] COLE KS and COLE RH. Dispersion and absorption in dielectrics I. Alternating current characteristics[J]. The Journal of Chemical Physics, 1941, 9: 341.
[20] NELSON SO. Electrical properties of agricultural products-A critical review[J]. Transactions of the ASAE 16(2): 384-400.
[21] NELSON S., FORBUS JR W., LAWRENCE K. Permittivities of fresh fruits and vegetables at 0.2 to 20 GHz[J]. The Journal of microwave power and electromagnetic energy: a publication of the International Microwave Power Institute, 1994, 29(2): 81.
[22] 王瑞庆, 张继澍, 马书尚. 基于电学参数的货架期红巴梨无损检测[J]. 农业工程学报, 2009, 25(4): 243-247.
[23] WANG S, TANG J, JOHNSON J.A., et al. Dielectric properties of fruits and insect pests as related to radio frequency and microwave treatments[J]. Biosystems Engineering, 2003, 85(2): 201-212.
[24] GUAN DG., CHENG M, WANG Y, et al. Dielectric properties of mashed potatoes relevant to microwave and radio-frequency pasteurization and sterilization processes[J]. Journal of Food Science, 2004, 69(1): FEB30-FEB37.
[25] WANG Y. WIG TD, TANG J, et al. Dielectric properties of foods relevant to RF and microwave pasteurization and sterilization[J]. Journal of Food Engineering, 2003, 57(3): 257-268.
[26] SARANG S, SASTRY SK, KNIPE L. Electrical conductivity of fruits and meats during ohmic heating[J]. Journal of Food Engineering, 2008, 87(3): 351-356.
[27] NELSON SO. Frequency-and temperature-dependent permittivities of fresh fruits and vegetables from 0.01 to 1.8 GHz[J]. Transactions of the ASAE, 2003, 46(2): 567-574.
[28] WANG S, MONZON M, GAZIT Y, et al. Temperature-dependent dielectric properties of selected subtropical and tropical fruits and associated insect pests[J]. Transactions of the ASAE, 2005, 48(5): 1873-1881.
[29] 王瑞庆.‘火柿’和‘红巴梨’电参数与生理生化变化关系研究[D]. 杨凌；西北农林科技大学, 2011.
[30] 郭文川, 郭康权, 王乃信. 电激励信号的频率和电压对果品电特性的影响[J]. 农业工程学报, 2004, 20(2): 62-65.
[31] 郭文川, 朱新华, 王转卫, 等. 基于介电特性的果品种类识别试验[J]. 农业机械学报, 2005, 36(7): 158-160.