Hot-water soluble on Waxy Black Rice and Waxy Rice Flours

찰흑미와 일반찰벼의 열수가용성 물질

  • Oh, Geum-Soon (Korea Food and Drug Administration) ;
  • Kim, Kwan (Department of Food Science and Technology Chonnam National University) ;
  • Choi, Gyeong-Cheol (Jeollanam-Do Institute of Health and Environment) ;
  • Na, Hwan-Sik (Jeollanam-Do Institute of Health and Environment) ;
  • Kang, Gil-Jin (Korea Food and Drug Administration) ;
  • Kim, Sung-Kon (Department of Food Science and Nutrition Dankook University)
  • Published : 2002.04.01

Abstract

The study was investigated hot-water soluble on waxy black and waxy rice flours according to gelatinization temperatures and heating time. The hot-water soluble contents of both samples were increased during heating time at $90^{\circ}C$. The waxy black and waxy rice flours solutions according to gelatinization temperatures ($80^{\circ}C,\;90^{\circ}C,\;95^{\circ}C\;and\;98^{\circ}C$) were heated for 10, 20 and 30 min. Determination of elution patterns of rice flours was used by Sepharose CL-2B column. As a result, the elution patterns were eluted the most in void volume ($V_0$) and the elution patterns of the hot-water solubles were increased according to heating time and gelatinization temperatures.

가용성 탄수화물 함량은 찰흑미와 일반찰벼 쌀가루를 $90^{\circ}C$에서 10분, 20분 및 30분 동안 열처리한 결과 찰흑미는 17.1%, 21.5%, 24.7%이였으며, 일반찰벼는 18.6%, 21.7%, 23.4%의 함량을 보여 두 시료 모두 비슷한 양상을 보였다. 찰흑미와 일반찰벼 모두 가용성 탄수화물 함량의 대수값은 가열시간이 증가할수록 증가하여 직선적인 관계를 보였다. 쌀가루를 가열온도($80^{\circ}C,\;90^{\circ}C,\;95^{\circ}C$$98^{\circ}C$)에 따라 일정 시간(10분, 20분 및 30분) 가열하여 얻은 가용성 탄수화물의 Sepharose CL-2B 컬럼에 의한 용출양상은 찰흑미와 일반찰벼 모두 void volume($V_0$) 부근에서 대부분 용출되었으며, 가열시간이 증가할수록, 가열온도가 높아질수록 가용성 탄수화물의 용출양상은 증가하였다. 또한 $180{\sim}210\;mL$ 부근에서도 일부가 용출되었다.

Keywords

References

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