Response of ECH2O Probe and TDR Probe in the Determination of Dielectric Characteristics of Rough Rice during Drying Process

E. Yasunaga, H. Miyamoto, Satoshi Yoshida, J. Chikushi

研究成果: 著書/レポートタイプへの貢献会議での発言

抄録

The purpose of this study is to examine the dielectric characteristics of rough rice during the drying process by using ECH2O probe and TDR probe for monitoring the moisture content of rough rice. Re-wetted rough rice was gradually air-dried, and the ECH2O and TDR waveform during the drying process were monitored by using EC-5 and EC-TE ECH2O probes and conventional two-wire and short-ended TDR probe, across a range of measurement frequencies 70 MHz for ECH2O probe and around 1GHz for TDR probe. In the drying process, the moisture content (m) of rough rice decreased gradually with the passage of time and finally attained about 11-15% w.b. accompanied by about 5% volume shrinkage. The relative dielectric constant (ε) evaluated from these waveforms obtained by TDR generally increased with the moisture content. The high correlation between m and ε demonstrates that the m value can be estimated from ε obtained from these probes with sufficient accuracy. A high correlation between m and mcal could be established. The term mcal stands for moisture content obtained from the equation that expressed the relation between m and ε.

元の言語英語
ホスト出版物のタイトルActa Horticulturae
出版者International Society for Horticultural Science
ページ371-376
ページ数6
ISBN(印刷物)9789066055629
DOI
出版物ステータス出版済み - 1 1 2009

出版物シリーズ

名前Acta Horticulturae
837
ISSN(印刷物)0567-7572

Fingerprint

rough rice
probes (equipment)
drying
water content
isomerases
air drying
wire
shrinkage
monitoring

All Science Journal Classification (ASJC) codes

  • Horticulture

これを引用

Yasunaga, E., Miyamoto, H., Yoshida, S., & Chikushi, J. (2009). Response of ECH2O Probe and TDR Probe in the Determination of Dielectric Characteristics of Rough Rice during Drying Process. : Acta Horticulturae (pp. 371-376). (Acta Horticulturae; 巻数 837). International Society for Horticultural Science. https://doi.org/10.17660/ActaHortic.2009.837.50

Response of ECH2O Probe and TDR Probe in the Determination of Dielectric Characteristics of Rough Rice during Drying Process. / Yasunaga, E.; Miyamoto, H.; Yoshida, Satoshi; Chikushi, J.

Acta Horticulturae. International Society for Horticultural Science, 2009. p. 371-376 (Acta Horticulturae; 巻 837).

研究成果: 著書/レポートタイプへの貢献会議での発言

Yasunaga, E, Miyamoto, H, Yoshida, S & Chikushi, J 2009, Response of ECH2O Probe and TDR Probe in the Determination of Dielectric Characteristics of Rough Rice during Drying Process. : Acta Horticulturae. Acta Horticulturae, 巻. 837, International Society for Horticultural Science, pp. 371-376. https://doi.org/10.17660/ActaHortic.2009.837.50
Yasunaga E, Miyamoto H, Yoshida S, Chikushi J. Response of ECH2O Probe and TDR Probe in the Determination of Dielectric Characteristics of Rough Rice during Drying Process. : Acta Horticulturae. International Society for Horticultural Science. 2009. p. 371-376. (Acta Horticulturae). https://doi.org/10.17660/ActaHortic.2009.837.50
Yasunaga, E. ; Miyamoto, H. ; Yoshida, Satoshi ; Chikushi, J. / Response of ECH2O Probe and TDR Probe in the Determination of Dielectric Characteristics of Rough Rice during Drying Process. Acta Horticulturae. International Society for Horticultural Science, 2009. pp. 371-376 (Acta Horticulturae).
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