Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Antioxidant Activity of Extracts from the Lespedeza bicolor

싸리(Lespedeza bicolor) 추출물의 항산화성에 관한 연구

  • 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)
  • 이양숙 (대구한의대학교 한방생명자원학과) ;
  • 주은영 (대구한의대학교 한방생명자원학과) ;
  • 김남우 (대구한의대학교 한방생명자원학과)
  • Published : 2005.02.01
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Abstract

This study was designed to investigate the antioxidant activity of Lespedeza bicolor extract, by measuring electron-donating ability (EDA) using 1,1-diphenyl-2-piciyl hydroxyl (DPPH), superoxide dismutase-like activity (SODA) by pyrogallol, and nitrite-scavenging ability. The EDA of water and ethanol extracts in nitrite-scavenging ability of ethand extract showed the highest values of $82.02\%$ and $75.56\%$, respectively. The SODA increased with the concentations of extract, which was $17.21\~44.08\%$ in ethanol extract $19.89\~29.86\%$ in pressure-water extract and $16.53\~20.0\%$ in water extract respectively. The nitrite-scavenging ability of ethanol extract (pH 1.2, 1000ppm) was $99.53\%$ that was higher than both $85.84\%$ in water extract and $74.72\%$ in pressure-water extract at pH 3.0 was also the highest as $98.20\%$.

싸리(Lespedeza bicolor)의 항산화 활성에 대한 연구의 일환으로, 물추출물과 에탄올추출물 및 압력열수추출물에 대하여 각 농도별로 전자공여능, SOD 유사활성, 아질산염 소거능 등을 분석하여 항산화활성을 분석하였다. 전자공여능은 물추출물에서 농도에 따라 $46.30\~82.02\%$로 가장 높았고, 에탄올추출물은 $44.53\~75.56\%$ 그리고 압력 열수추출물은 $37.40\~60.48\%$로 분석되었다. SOD 유사활성은 에탄올추출물에서 농도에 따라 $17.21\~44.08\%$로 가장 높았고, 압력열수추출물이 $19.89~\~29.86\%$, 물추출물이 $16.53\~20.0\%$로 측정되었으며, 각 추출물의 농도가 증가함에 따라 전자공여능과 SOD 유사활성이 증가하는 것으로 나타났다. 그리고 아질산염 소거능은 pH 1.2의 조건에서 1,000 ppm 농도의 에탄올추출물이 $99.53\%$로써 물추출물$(85.84\%)$과 압력 열수추출물$(74.72\%)$보다 높은 소거능을 나타내었으며, pH 3.0에서도 에탄올추출물이 $98.20\%$의 높은 아질산염 소거능을 나타내었다.

Keywords

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