NDLI: Sugar content in watermelon juice based on dielectric properties at 10.45GHz

Content Provider	IEEE Xplore Digital Library
Author	Isa, M.M. Ibrahim, N. Shamsudin, R. Marhaban, M.H.
Copyright Year	2009
Description	Author affiliation: Department of Process and Food Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 Serdang Selangor, Malaysia (Ibrahim, N.; Shamsudin, R.) \|\| Department of Electrical and Electronic Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 Serdang Selangor, Malaysia (Isa, M.M.; Marhaban, M.H.)
Abstract	Determination of sugar content in 10 matured red seedless watermelons by measuring the dielectric properties is described in this paper. The determination is made based on the comparison of watermelon juice and water with sugar mixture. The dielectric properties of both the extracted watermelon juice and water with sugar mixture are measured over the frequency range from 200 MHz to 20 GHz and permittivity data at frequency 10.45 GHz is highlighted using an open-ended coaxial-line probe and network analyzer. Measurements are made at room temperature ± 27 °C; 70–80% RH. The sugar content was the most significant factor affecting the maturity of watermelon. Dielectric properties of watermelon juice and water with sugar mixture were measured and the dielectric properties of both liquids were compared. In this study, data obtained suggests that dielectric properties shows strong relation with sugar content. The dielectric constant is inversely proportional with increment of sugar content. From the dielectric properties measured, the sugar content in the watermelon is predicted. In additional, the standard sugar content measurement, HPLC method is also measured and result of the study is reported in this paper. Dielectric measurement of watermelon juice and water with sugar mixture are presented graphically to show their relationships.
Starting Page	529
Ending Page	532
File Size	119980
Page Count	4
File Format	PDF
ISBN	9781424451869
DOI	10.1109/SCORED.2009.5442945
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-11-16
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Water Temperature Dielectric constant Permittivity measurement matured red watermelons Dielectric measurements dielectric properties Frequency measurement Coaxial components Dielectric liquids Data mining Probes
Content Type	Text
Resource Type	Article

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