Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Physicochemical Properties of Pigmented Rice Starch (Suwon-415)

수원 415호 유색미 전분의 이화학적 특성

  • Lee, You-Seok (Department of Food Science and Technology & Institute of Agricultural Science and Technology, Chonnam National University) ;
  • Cho, Ji-Mi (Department of Food Science and Technology & Institute of Agricultural Science and Technology, Chonnam National University) ;
  • Rhee, Chong-Ouk (Department of Food Science and Technology & Institute of Agricultural Science and Technology, Chonnam National University)
  • 이유석 (전남대학교 식품공학과 및 농업과학기술연구소) ;
  • 조지미 (전남대학교 식품공학과 및 농업과학기술연구소) ;
  • 이종욱 (전남대학교 식품공학과 및 농업과학기술연구소)
  • Published : 2003.05.31
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Abstract

Physicochemical and gelatinization properties of Suwon-415 pigmented rice starch were determined. The median and mean particle sizes of Suwon-415 pigmented rice starch were 5.23 and $6.27\;{\mu}m$, whereas those of non-glutinous rice starch were 4.71 and $5.43\;{\mu}m$ respectively. Water-binding capacity, iodine reaction and intrinsic viscosity of Suwon-415 pigmented rice starch were lower than those of non-glutinous rice starch. X-ray diffraction patterns showed traditional A type of cereals and relative crystalline of both samples showed no difference. Peak viscosity, breakdown and setback were increased with increasing weight of starches.

유색미는 다양한 천연색소를 함유하고 있으며 항산화기능의 효과가 알려져 이용이 증가하고 있는 추세이다. 이러한 이용을 증대시키고자 유색미 전분을 이용한 식품의 제조에 영향을 주는 여러 가지 이화학적 특성들에 대해 조사하였다. 수원 415호 유색미 전분의 평균입경과 중심입경은 각각 $6.27{\mu}m$와 $5.23{\mu}m$, 일반미 전분은 각각 $5.43{\mu}m$와 $4.71{\mu}m$로 수원 415호 유색미 전분의 입경이 일반미 전분 보다 더 컸다. 수원 415호 유색미와 일반미의 물결합능력은 큰 차이를 보이지 않았으며, 요오드 반응은 일반미 전분이 수원 415호 유색미 전분보다 조금 높게 나타났다. 수원 415호 유색미 전분과 일반미 전분의 고유점도는 각각 107.5ml/g, 145.8ml/g으로 일반미 전분의 고유점도가 더 높은 값을 보였으며, X선 회절도에 의한 결정형은 전형적인 A형을 보였으며 상대결정도는 수원 415호 유색미 전분과 일반미 전분이 각각 0.43, 0.41로 수원 415호 유색미 전분이 큰 값을 보였다. 팽윤력과 용해도는 온도가 상승함에 따라 증가하였으나 수원 415호 유색미 전분이 일반미 전분 보다 각각의 온도에서 팽윤력과 용해도가 더 낮았다. 신속점도계를 이용하여 측정한 전분의 농도별 호화특성 측정결과 전분의 농도가 높아질수록 호화온도가 낮아지는 경향이었으며, 수원 415호 유색미와 일반미 전분의 최고 점도와 최저 점도는 각 농도에서 큰 차이를 보이지 않아 식품재료로 사용시 일반미와 큰 차이를 보이지 않을 것이라 생각된다.

Keywords

References

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