Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Rheological Properties of Arrowroot Statch Suspension

칡전분 현탁액의 리올로지적 성질

  • Kim, Kwan (Department of Food Science and Technology, Chonnam National University) ;
  • Yoon, Han-Kyo (Department of Food Science and Technology, Chungnam National University) ;
  • Kim, Sung-Kon (Department of Food Science and Nutrition, Dankook University) ;
  • Lee, Shin-Young (Department of Fermentation Technology, Kwangweon National University)
  • 김관 (전남대학교 식품가공학과) ;
  • 윤한교 (충남대학교 식품가공학과) ;
  • 김성곤 (단국대학교 식품영양학과) ;
  • 이신영 (강원대학교 발효공학과)
  • Published : 1986.04.01
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Abstract

The rheological properties of arrowroot starch suspension (2-6%) were investigated with a tube viscometer. The starch suspensions of less $t^1$, 4% showed a dilatant behavior with no yield stress at the temperature range of $30-65^{\circ}C$. However, the starch suspension of 6% concentration showed a pseudoplastic behavior at $65^{\circ}C$. The consistency index was exponentially increased with the increase of the starch concentration. The activation energy of flow of the starch suspensions was 0.370-0.399 kcal/mole at $30^{\circ}-60^{\circ}C$ and 28-60 kcal/mole at $65^{\circ}C$.

칡 전분현탄액$(2{\sim}6%)$의 리올로지 특성을 $30^{\circ}{\sim}65^{\circ}C$의 온도 범위에서 모세관 점도계를 이용하여 조사하였다. 4%농도의 경우 $65^{\circ}C$에서 의가소성 유체의 거동을보였다. 점조도지수 값은 전분 농도의 중가에 따라 지수 함수적으로 증가하였다. 온도 $30^{\circ}{\sim}60^{\circ}C$ 의 경우 전분현탄액의 유동의 활성화에너지는 $0.307{\sim}0.399kcal/mole$이었으나, $60^{\circ}{\sim}65^{\circ}C$의 경우에는 약 $28{\sim}60kcal/mole$이었다.

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