KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
권호 표지

Differences in Physicochemical Characteristics between Head and Incomplete Rice Grains

쌀 완전립과 불완전립의 이화학적 특성 비교

  • Kwak, Young-Min (Department of Food Science and Nutrition, Kyungpook National University) ;
  • Yoon, Mi-Ra (Department of Food Science and Nutrition, Kyungpook National University) ;
  • Sohn, Jae-Keun (Division of Plant Biosiences, Kyungpook National University) ;
  • Kang, Mi-Young (Department of Food Science and Nutrition, Kyungpook National University)
  • 곽영민 (경북대학교 식품영양학과) ;
  • 윤미라 (경북대학교 식품영양학과) ;
  • 손재근 (경북대학교 식물생명과학부) ;
  • 강미영 (경북대학교 식품영양학과)
  • Published : 2006.12.31
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Abstract

This study was performed to compare the differences in physicochemical characteristics between head and incomplete kernels separated from Ilpumbyeo, Korean rice cultivar. The contents of mineral and protein were higher in incomplete than head kernels. There was significant difference in composition of fatty acid and amino acids, which affect the taste, between two kernels. The gelatinized head kernel had the higher viscosity than incomplete kernel. The content and chain length of amylose were higher in head than incomplete kernels. Differential scanning calorimeter results revealed that head kernel had lower starting temperature, higher maximum temperature, and higher enthalpy for gelatinization than incomplete kernel. Also we could found that the hydrolysis rate by glucoamylase was higher in the head kernel than incomplete kernel.

완전립과 불완전립의 이화학적 특성을 검토한 결과를 요약하면 다음과 같다. 1. 무기질, 단백질 함량은 불완전미가 완전미에 비해서 높았으며, 지방산의 조성과 맛에 관여하는 아미노산의 조성 분포에도 차이가 있었다. 2. 호화된 완전미 쌀가루의 점도가 불완전미 쌀가루에 비해서 높았다. 3. 완전미 쌀 배유 전분의 아밀로오스 함량 및 쇄장길이는 완전미가 불완전미보다 높았으며, 호화 엔탈피도 높았다. 4. 완전미가 불완전미에 비해서 경시적인 가수분해도가 높았다.

Keywords

References

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