Granular Properties of Acorn Flour at Various Soaking Conditions

수침을 달리하여 제조한 도토리 앙금의 입자 특성

  • Na, Hwan-Sik (Food and Drug Analysis Division, Health and Envirionment Institute of Chollanamdo) ;
  • Oh, Geom-Soon (Dept. of Food Science and Technology, Chonnam National University) ;
  • Park, Jong-Hun (Dept. of Food Science and Technology, Chonnam National University) ;
  • Kim, Kwan (Dept. of Food Science and Technology, Chonnam National University) ;
  • Kim, Sung-Kon (Dept. of Food Science and Nutrition, Dankook University)
  • 나환식 (전라남도보건환경연구원 식품약품분석과) ;
  • 오금순 (전남대학교 식품공학과) ;
  • 박종훈 (전남대학교 식품공학과) ;
  • 김관 (전남대학교 식품공학과) ;
  • 김성곤 (단국대학교 식품영양학과)
  • Published : 2000.10.01

Abstract

This study was attempted to investigate granular properties of acorn flours which were prepared by soaked nut and sediment. X-ray diffraction pattern of acorn flour was B type and was not affected by soaking treatment. The principal indices of the pattern were at diffraction angles ($2{\theta}$) of $14.5^{\circ},\;17.2^{\circ},\;19.7^{\circ},\;22.2^{\circ}\;and\;24.5^{\circ}$. The shape of acorn flour was elliptical and some rounded triangular by scanning electron microscope (SEM). The granule size of acorn flours varies from $4\;{\mu}{\textrm}{m}$ to approximately $20\;{\mu}{\textrm}{m}$. although morphology of the acorn flour was not affected, the non-starchy substances of surface was slightly changed by soaking.

수침과정을 달리하여 제조한 도토리 앙금의 입자 특성을 조사하였다. 도토리 앙금의 X-선 회절도는 회절각도 $(2{\theta})14.5^{\circ},\;17.2^{\circ},\;19.7^{\circ},\;22.2^{\circ},\;24.5^{\circ}$에서 피크를 보이는 B형의 결정형을 보였으며, 열매의 수침과 앙금의 수침에는 영향을 받지 않았다. 또한 도토리 앙금 중 전분 입자는 대부분 타원형이며 일부는 모서리가 둥근 삼각형 모양이 존재하였고 중앙에는 hilum이 있었으며, 크기는 대부분 $10~20\;\mu\textrm{m}$ 범위였다. 열매의 앙금의 수침 과정 중 전분 입자에 붙어 있었던 비전분 성분은 대부분 제거되었다. 이상의 결과로 보아 도토리 열매와 앙금을 수침하는 기간이 입자의 성상이나 결정도에 큰 영향을 주지 않는 것으로 판단된다.

Keywords

References

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