한국식품영양학회지 (The Korean Journal of Food And Nutrition)

  • 제16권2호
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  • Pages.105-110
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  • 2003
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  • 1225-4339(pISSN)
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  • 2287-4992(eISSN)
한국식품영양학회 (The Korean Society of Food and Nutrition)
권호 표지

쌀 전분의 노화 특성에 관한 연구

Studies on the Retrogradation Properties of Rice Starch

  • 이찬 (한서대학교 식품생물공학과)
  • Lee, Chan (Dept. of Food and Biotechnology, Hanseo University)
  • 발행 : 2003.06.01
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초록

밥의 식미에 영향을 주는 쌀품종별 노화특성에 관한 연구에서 아밀로오스 함량과 gel consistency가 다른 5가지 품종에 대하여 조사하였다. Brabender amylograph에 의한 쌀품종별 호화특성에서는 아밀로오스 함량에 관계없이 hard gel인 품종이 높은 setback 값을 보였다. 저장시의 경도변화에서는 아밀로오스 함량이 높은 품종의 최종경도가 더 높았다. 또한 Avrami equation에 의한 쌀전분겔의 노화특성 연구에서도 아밀로오스 함량이 높은 품종에서 노화속도를 나타내는 지표로서 사용되는 time constant(l/k)값이 더 높은 것으로 나타남에 따라 아밀로오스 함량이 쌀전분의 노화현상에서 매우 중요한 요인라는 것을 알 수 있었다.

The effect of varietal differences of rice starches by amylose content and gel consistency on the retrogradation behavior was studied. The gel consistency test, which is designed to detect differences in the texture of cooked rice of varieties that have a similar amylose content, had been turned out to be useful in this study. Both Suwon 232 and San Li Cun had higher amylose content, but were greatly different in gel consistency values. The results showed that setback viscosity of rice flour measured in a Brabender amylograph was significantly affected by amylose content as well as gel consistency. Increase in the rigidity modulus (E) of rice starch gels during storage determined by using Texture analyzer indicated that amylose content was an important factor in terms of hardness development The study of Avrami kinetics of retrogradation showed that time constant of rice starch gels was influenced by amylose content, but not by gel consistency.

키워드

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