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http://dx.doi.org/10.7740/kjcs.2020.65.2.079

Improvement of Rice Quality Using Grain Color Sorter During Early Transplanting Cultivation in the Southern Plain of Korea  

Lee, Jong-Hee (Department of Southern Area Crop Science, National Institute of Crop Science, RDA)
Lee, Ji-Yoon (Department of Southern Area Crop Science, National Institute of Crop Science, RDA)
Lee, Somyeong (Department of Southern Area Crop Science, National Institute of Crop Science, RDA)
Shin, Dongjin (Department of Southern Area Crop Science, National Institute of Crop Science, RDA)
Cha, Jinkyeong (Department of Southern Area Crop Science, National Institute of Crop Science, RDA)
Cho, Jun-Hyeon (Department of Southern Area Crop Science, National Institute of Crop Science, RDA)
Kwon, Young-Ho (Department of Southern Area Crop Science, National Institute of Crop Science, RDA)
Jo, Su-min (Department of Southern Area Crop Science, National Institute of Crop Science, RDA)
Park, Dong-Soo (Department of Southern Area Crop Science, National Institute of Crop Science, RDA)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.65, no.2, 2020 , pp. 79-83 More about this Journal
Abstract
A photoelectric grain color sorter is commonly used in postharvest technology to detect and separate grains considered to be of good quality from those of poor quality based on color. In this study, the milled rice of Haedamssal cultivated under early transplanting conditions was evaluated using the color sorting device. Rice was classified according to standard grades of 64% for grade A, 18% for grade B, and 17.2% for grade C. By head rice ratio analysis, the milled rice of Haedamssal was recorded a grade A of 72.9%, representing a 24.5% improvement compared to the 48.4% of original grains. However, the grades B and C of Haedamssal rice were lower than those of original rice. In addition, grade A whiteness of Haedamssal rice was 45.3, which was lower than that of original grains. The color affinity redness was significantly lower in Haedamssal rice than in the screening control. No significant difference was found in the amylose and protein contents of rice before and after selection by the grain color sorter. In contrast, grain viscosity analysis revealed an increase in peak and final viscosities, while the consistence viscosity increased in low grade levels. Our results suggest that the photoelectric grain color sorter could improve the head rice ratio and palatability of early transplanted Hadamssal rice.
Keywords
color sorter; early transplanting; good grain quality; Haedamssal; rice;
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