Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Studies for Component Analysis, Antioxidative Activity and ${\alpha}-glucosidase$ Inhibitory Activity from Equisetum arvense

쇠뜨기(Equisetum arvense) 추출물의 항산화 활성 분석 및 ${\alpha}-glucosidase$ 저해활성

  • Gua, Jia (Division of Biotechnology, Kangwon National University) ;
  • Jin, Ying-Shan (Division of Biotechnology, Kangwon National University) ;
  • Han, Woong (Division of Biotechnology, Kangwon National University) ;
  • Shim, Tae-Heum (Gangwon Research Institute of Health and Environment) ;
  • Sa, Jae-Hoon (Gangwon Research Institute of Health and Environment) ;
  • Wang, Myeong-Hyeon (Division of Biotechnology, Kangwon National University)
  • 곽가 (강원대학교 생명공학부) ;
  • 김영선 (강원대학교 생명공학부) ;
  • 한웅 (강원대학교 생명공학부) ;
  • 심태흠 (강원도 보건환경연구원 식의약품분석과) ;
  • 사재훈 (강원도 보건환경연구원 식의약품분석과) ;
  • 왕명현 (강원대학교 생명공학부)
  • Published : 2006.03.31
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Abstract

This study was carried out to investigate the chemical components, and antioxidative and $anti-{\alpha}-glucosidase$ activities of Equisetum arvense extracts. In Equisetum arvense extracts were composed of 53.20% of crude fiber, 20.42% of crude ash, 15.32% of crude protein and 2.21% of crude fat. Potassium was the most predominant mineral and followed by phosphorus, calcium, magnesium, and sodium. The contents of the unsaturated fatty acids, such as linolenic acid, linoleic acid, and palmitic acid, were higher than those of saturated fatty acids. Seventy percent ethanol extract exhibited antioxidative activity with $IC_{50}$ of $168.1\;{\mu}g/ml$. The Seventy percent methanol extract showed higher ${\alpha}-glucosidase$ inhibitory activity than other solvent extracts.

쇠뜨기 추출물을 이용하여 당뇨병에 대한 기능성 의약품 개발을 목적으로 쇠뜨기 가루의 화학성분, 항산화 활성을 조사하였다. 일반성분은 탄수화물이 53.20%로 탄수화물의 함량이 가장 높았다. 그 밖에 조회분, 조단백질, 수분, 조지방 순으로 나타났으며, 각각 20.42%, 15.32%, 8.85%, 2.21%로 나타났다. 쇠뜨기 가루에 가장 많은 무기성분으로는 K, Ca등 2종류가 기타원소에 비해 다량 함유되어 있었다. 이중 가장 많이 검출된 것은 K로 3768.12 mg/100 g으로 가장 많았으며, Ca은 1,130.44 mg/100 g로 나타났다. P, Mg, Na는 $180{\sim}110\;mg/100g$이며, 가장 적은 양을 보인 것은 Zn이 2.19 mg/100 g로 나타났다. 구성당은 총 2종이 분리 동정되었으며, 그 중 glucose가 13,351.88 mg/100 g, mannose는 1,616.31 mg/100 g으로 나타났다. 지방산 중 가장 많이 포함하고 있는 것은 linolenic acid$(C_{18:3})$가 42.83%으로 나타났으며 linoleic acid$(C_{18:2})$ 23.60%, palmitic acid$(C_{16:0})$ 19.00% 순으로 나타났다. 또한 총 지방산 중 포화지방산이 25.57%로 불포화 지방산이 포화지방산에 비해 3 배정도 많이 함유하고 있는 것으로 드러났다. DPPH 라디칼 소거법에 의한 쇠뜨기 추출물들의 항산화 활성은 70% ethanol 추출물의 항산화 활성$(IC_{50})$이 $168.1\;{\mu}g/ml$로 가장 높게 나타났고, 다음으로 70% methanol 추출물이 $187.8\;{\mu}g/ml$으로 나타났으며, chloroform 추출물이 $194.2\;{\mu}g/ml$, methanol, 물, ethanol추출물 순으로 나타났다. ${\alpha}-Glucosidase$ 측정값은 70% methanol 추출물에서 82.05%의 높은 저해 활성을 보였다.

Keywords

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