Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Analysis of the Contents and Physiological Activities of Calystegia japonica Leaf Extracts

메꽃(Calystegia japonica) 잎 추출물의 함유성분과 생리활성에 관한 연구

  • Choi, Bok-Dong (Department of Herbal Biotechnology, Daegu Haany University) ;
  • Jeon, Ho-Sung (Research Institute for Biomedical Resources, JungMon) ;
  • Lee, Yang-Suk (Department of Herbal Biotechnology, Daegu Haany University) ;
  • Joo, Eun-Young (Department of Herbal Biotechnology, Daegu Haany University) ;
  • Kim, Nam-Woo (Department of Herbal Biotechnology, Daegu Haany University)
  • 최복동 (대구한의대학교 한방생약자원학과) ;
  • 전호성 ((주)정문 한방생명자원연구소) ;
  • 이양숙 (대구한의대학교 한방생약자원학과) ;
  • 주은영 (대구한의대학교 한방생약자원학과) ;
  • 김남우 (대구한의대학교 한방생약자원학과)
  • Received : 2009.10.14
  • Accepted : 2009.12.07
  • Published : 2010.04.30
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Abstract

This study examined the physiological activities as well as the total polyphenol and flavonoid content of water extract (WE), ethanol extract (EE) and hot water extract of Calystegia japonica leaves under high pressure (HWE). The xanthine oxidase inhibitory rate of EE was the highest with a value of 98.89% at a concentration of 1.0 mg/mL, whereas the rate of WE and HWE was over 90% at a concentration of 0.3 mg/mL. The superoxide dismutase (SOD)-like activity of HWE was the highest at 18.88%. The nitrite scavenging abilities were 64.59-66.46% at conditions of pH 1.2 and 1.0 mg/mL, and 52.78-55.89% at pH 3.0. The electron donating ability of EE was the highest with a value of 84.80% at a concentration of 0.1 mg/mL. All extracts showed the highest degree of electron donating at the concentration of 0.1 mg/ mL, and this effect decreased as the extract concentration increased. The EE had the highest content of total polyphenol compound (173.89 mg/g) and flavonoid compounds (40.68 mg/g).

본 연구에서는 야생 식 약용식물들을 새로운 기능성 소재로 개발하기 위한 연구의 일환으로 메꽃 잎의 물(WE)과 에탄올(EE) 그리고 열수 추출물(HWE)에 대한 xanthine oxidase 저해, SOD 유사활성, 아질산염 소거, 전자공여능 그리고 총 폴리페놀과 플라보노이드 함량을 측정하였다. 메꽃 잎의 세가지 추출물은 0.5 mg/mL에서 90% 이상의 xanthine oxidase 저해율을 나타내었으며, 고농도에서는 항산화제로 사용되는 BHA나 아스코르브산과 유사한 xanthine oxidase 저해효과를 나타내었다. SOD 유사활성은 HWE 추출물이 1.0 mg/mL에서 18%의 활성을 나타내었다. 아질산염에 대한 소거능을 측정한 결과에서는 1.0 mg/mL의 pH 1.2에서 세가지 추출물 모두 약 65% 이상, pH 3.0의 조건에서는 50% 이상의 소거능을 보였으며, WE가 가장 높은 아질산염 소거율을 나타내었다. 전자공여능은 0.1 mg/mL에서 EE가 84.80%로 가장 높았으며, 세가지 추출물 모두 저농도에서 가장 우수한 활성을 나타내었고, 추출물의 농도가 증가할수록 전자공여능이 감소하였다. 그리고 EE는 179.89 mg/g의 폴리페놀과 40.68 mg/g의 플라보노이드 화합물을 함유하였다. 이상의 결과 메꽃 잎은 우수한 생리활성과 다량의 폴리페놀과 플라보노이드를 함유하므로 이를 이용한 식음료나 기능성 가공식품, 식품 보존제 개발에 유용하게 활용될 수 있는 기능성 소재인 것으로 생각된다.

Keywords

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