The objective of this study was to determine the molecular and crystalline structures of starches from diverse rice cultivars for three major food processing (cooked rice, brewing and rice cake). Rice starches were isolated from 10 different rice varieties (4 varieties for cooked rice, 2 varieties for brewing, and 4 varieties for rice cake) grown in Korea. Apparent amylose contents of rice starches from cooked rice, brewing and rice cake varieties were 20.2-25.3%, 9.87-35.6%, and 20.8-28.3%, respectively. Rice starches from cooked rice varieties showed higher pasting viscosity and final viscosity but lower pasting temperature than those from brewing and rice cake varieties. Swelling factor at 80 °C of rice starches from cooked rice, brewing and rice cake varieties was 3.7-7.2, 3.5-11.4, and 2.4-7.6 , respectively. Based on structure and physicochemical properties of rice starches extracted from different rice varieties, principal component analysis (PCA) results showed that these rice varieties could be clearly classified according to processing adaptability for cooked rice and rice cake.
저자
Seul Lee [ Division of Food and Nutrition, Chonnam National University ]
Hyun-Jung Chung [ 정현정 | Division of Food and Nutrition, Chonnam National University ]
본 학회는 화학, 생화학, 분자생물학, 미생물학, 식품공학, 의학, 약학, 유전공학 및 생물공학, 환경 및 기타 공업 등 전 분야의 탄수화물관련 이론과 기술을 연구 발전시키고 산학협동을 통해 이를 보급하여 국내 관련 산업의 발전 및 국민생활의 과학화에 기여하고자 하며, 이러한 목표와 비젼의 실현을 위해 회원들이 적극적인 참여와 활동을 전개하고자 한다.