Studies for Component Analysis and Antioxidative Evaluation in Acorn Powders

도토리 가루의 성분분석과 항산화능 평가

  • Shim, Tae-Heum (Gangwon Research Institute of Health and Environment) ;
  • Jin, Ying-Shan (Division of Biotechnology, Kangwon National University) ;
  • Sa, Jae-Hoon (Gangwon Research Institute of Health and Environment) ;
  • Shin, In-Cheol (Gangwon Research Institute of Health and Environment) ;
  • Heo, Seong-Il (Division of Biotechnology, Kangwon National University) ;
  • Wang, Myeong-Hyeon (Division of Biotechnology, Kangwon National University)
  • 심태흠 (강원도보건환경연구원 식의약품분석과) ;
  • 김영선 (강원대학교 생명공학부) ;
  • 사재훈 (강원도보건환경연구원 식의약품분석과) ;
  • 신인철 (강원도보건환경연구원 식의약품분석과) ;
  • 허성일 (강원대학교 생명공학부) ;
  • 왕명현 (강원대학교 생명공학부)
  • Published : 2004.10.31

Abstract

Chemical components and physiological activities of acorn powders were investigated to develop functional food. Proximate components were 87.29% crude fiber, 1.18% crude fat, 0.84% crude protein, and 0.12% crude ash. Potassium was most predominant mineral, followed by phosphorus, calcium, magnesium, and sodium. Contents of unsaturated fatty acids, such as oleic, linoleic, and linolenic acids, were higher than those of saturated fatty acids. Water and 75% ethanol extracts of acorn powders showed higher absorbency at 285 nm. Water and 75% ethanol extracts exhibited antioxidative activity with $IC_{50}$ of 19.0 and $21.4\;{\mu}g/mL$, respectively, indicating they are the major biological component in acorn powders. Results suggest water extract of acorn can be used as new material for natural antioxidant and functional food.

도토리 가루를 이용하여 기능성 식품개발을 목적으로 도토리 가루의 화학성분, 항산화 활성을 조사하였다. 일반성분은 탄수화물이 87.29%, 수분 10.57%, 조지방 1.18%, 조단백 0.84%, 회분 0.12% 순으로 나타났다. 도토리 가루에 가장 많은 무기성분으로는 K이 40.68mg/100g으로 나타났으며, 그 외 P(8.95mg/100g), Ca(8.64mg/100g), Mg(4.67mg/100g), Na(3.94mg/100g), Fe(1.41mg/100g) 순으로 나타났다. 구성당은 총 7종이 분리 동정되었으며, 그 중 glucose가 대부분으로 나타났고 rhamnose, galactose, arabinose, mannose, fucose, xylose 순으로 함유되어 있었다. 주요 지방산 조성은 oleic acid(C18:1)가 31.87%로 가장 높았고, linoleic acid(C18:2)는 18.72%, linolenic acid(C18:3)는 16.67% 그리고 palmitic acid(C16:0)가 11.32% 순으로 나타났다. 항산화 효과는 물 추출물에서 $IC_{50}$$19.0{\mu}g/mL$로 가장 높게 측정되었고 75% 에탄올 추출물$(IC_{50}:\;21.4{\mu}g/mL)$ 및 메탄올 추출물$(IC_{50}:\;45.2{\mu}g/mL)$순으로 항산화 효과가 측정되었다.

Keywords

References

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