Journal of the Korean Society of International Agriculture (한국국제농업개발학회지)

The Korean Society of International Agriculture (한국국제농업개발학회)
권호 표지

Effect of Cold Water Irrigation on Rice Grain Quality

냉수처리가 쌀 품질에 미치는 영향

Kim, Gi-Yeong;Jeong, Jin-Il;Kim, Bo-Gyeong;Sin, Seo-Ho;Go, Jae-Gwon;Park, Hong-Gyu;Kim, Jeong-Gon
김기영;정진일;김보경;신서호;고재권;박홍규;김정곤

  • Published : 20060000
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Abstract

This study was conducted to determine the change of physicochemical and eating quality properties of the rice grown in natural and cold-water irrigated plot. Six rice varieties/lines with different cold tolerance were grown in cold-water(21oC) irrigated plot from 20 days after transplanting to 45 days after heading date. After harvest, physicochemical properties of rice influencing eating quality were determinated. The cold-water treatment increased total protein, and fatty acid content of brown and/or milled rice. Cold-tolerant varieties/lines(Hitomebore, Jinbubyeo, and Stejaree 45) were less than coldsusceptible and cold moderate varieties/lines(HR19621-AC6, Sambaegbyeo, and Unbong 31) in the protein content change of brown rice. With regard to amylogram properties, however, the cold-water treatment resulted in a significant decrease in peak · breakdown · consistency viscosities of rice flour, though it increased setback viscosity. Cold-tolerant varieties/lines were shown to be less than those of cold-susceptible varieties/lines in the change of peak, breakdown and setback viscosities. Alkali digestion value (ADV) of rice produced in cold-water irrigated plot was increased, while palatability value by rice taster was decreased.

Keywords

References

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