Identification of Kiwifruit and Peach Varieties Based on Dielectric Properties

doi:10.7506/spkx1002-6630-201203001

Abstract

Abstract: In this study, two kiwifruit cultivars, Qinmei and Hayward, and two peach cultivars, Qinguang No. 2 and Qinwang were used to explore the feasibility of distinguishing different fruit varieties based on electrical properties (complex impedance Z, parallel equivalent inductance Lp, loss coefficient D, impedance phase angle θ, equivalent series resistance Rs, conductivity G and parallel equivalent capacitance Cp). The results showed that a good linearity was found for the lgZ-lgf and lgLp-lgf relationships of kiwifruit and peach with R2 ＞ 0.95. Kiwifruit and peach could be distinguished by D value in the exciting frequency range of 100 Hz－1.58 kHz, by θ and Rs values in the range of 100 Hz－6.31 kHz, and by G value in the range of 100 Hz－100 kHz. Hayward, Qinmei, Qinwang and Qinguang No. 2 were distinguished by Z value in the range of 15.8－100 kHz and by Cp in the range of 100 Hz－158 kHz.

Key words: kiwifruit, peach, electric property, sensitive electrical parameters

CLC Number:

S183

TANG Yan, ZHANG Ji-shu. Identification of Kiwifruit and Peach Varieties Based on Dielectric Properties[J]. FOOD SCIENCE, 2012, 33(3): 1-4.

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Identification of Kiwifruit and Peach Varieties Based on Dielectric Properties

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