Korean Journal of Food Science and Technology (한국식품과학회지)
- Volume 24 Issue 4
- /
- Pages.347-352
- /
- 1992
- /
- 0367-6293(pISSN)
Physicochemical Properties of Defatted Nonwaxy and Waxy Rice Starches
탈지한 멥쌀과 찹쌀 전분의 이화학적 특성
- Kim, Soo-Kyung (Department of Food and Nutrition, Chonnam National University) ;
- Shin, Mal-Shick (Department of Food and Nutrition, Chonnam National University)
- Published : 1992.08.01
Abstract
Physicochemical properties of native and defatted nonwaxy(Dongjin byeo) and waxy(Sinseunchalbyeo) rice starches were investigated. The granule shapes of rice starches were polygonal and X-ray diffraction patterns were A types, but relative crystallinity was decreased by defatting. The amylose content of defatted starches slightly increased, but water binding capacity of defatted starches decreased. Swelling power and solubility of starches increased with the increase of temperature, at each temperature increased by defatting. Transmittance of Dongjinbyeo and Sinseunchalbyeo starch suspensions showed a rapid increase at
멥쌀전분인 동진벼와 찹쌀전분인 신선찰벼를 85% 메탄올로 탈지시켜 생전분과 탈지전분과의 이화학적 성질을 비교 검토하였다. 쌀전분의 입자모양은 다각형이고 X-ray 회절도로부터 얻은 결정형은 A형 이었으며 탈지 후 결정강도는 약간 감소하였다. 아밀로오스 함량은 탈지시키면 약간 증가하였으며 물결합능력은 감소하였다. 팽윤력과 용해도는 온도가 증가함에 따라 상승하였고 탈지 처리 후 각 온도에서 더 높은 팽윤력과 용해도를 보였다. 광투과도에 의한 호화개시 온도는 동진벼전분은