Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Antioxidative Effect of Angelica acutiloba Kitagawa Ethanol Extract

일당귀 에탄올 추출물의 항산화 효과

  • Published : 2009.01.30
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Abstract

This study was conducted to investigate the antioxidant effect of 80% ethanol extracts from Angelica acutiloba Kitagawa (A. acutiloba Kitagawa) in vitro. The extract was further fractionated subsequently by n-hexane, chloroform, ethylacetate, n-butanol and water. Antioxidative activities of different fractions were examined by 1,1-diphenyl-2-picryl hydrazyl (DPPH) radical generation, Rancimat test, thiobarbituric acid (TBA) value, nitrite scavenging activity, inhibition of lipid peroxidation and peroxide value (POV) in linoleic acid in comparison with the commercial antioxidant butylated hydroxy toluene (BHT). Antioxidant activities of n-hexane fraction of Angelico acutiloba Kitagawa ethanol extract were the highest among fractions and were a little less than that of BHT. Nitrite scavenging activity showed the most remarkable effect at pH 12. These results suggest that ethanol extracts of A. acutiloba Kitagawa can be used in natural antioxidant source.

본 연구는 일당귀의 생리활성 및 기능성을 검토하기 위하여 in vitro에서 일당귀 에탄올 추출물과 용매별 분획물에 대한 DPPH radical 소거능, 항산화 지수, 아질산염 소거능, linoleic acid에 대한 항산화 효과, 지질과산화 억제 효과를 측정하여 일당귀의 항산화력을 측정하였다. 일당귀 에탄올 추출물을 n-hexane, chloroform, ethylacerate, n-butanol, water로 계통 분획하여 DPPH radical에 대한 자유기 소거능을 측정한 결과 n-hexane 분획이 $39{\mu}g/ml$로 가장 강한 항산화 활성을 나타내었다. 또한 Rancimat로 측정한 항산화 지수도 분획 중 n-hexane 분획이 1.73으로 가장 높게 나타났으며, 아질산염 소거능에서도 모든 pH에서 n-hexane 분획이 가장 높게 나타났으며, pH 변화에 따른 각 분획의 아질산염 소거 작용은 pH 1.2에서 가장 우수하였다. 지질과산화물 생성 억제 효과는 n-hexane 분획이 87.7%로 가장 높았으나, 양성대조군으로 사용한 BHT의 억제율보다는 낮았다. Linoleic acid에 대한 항산화 효과를 과산화물가로 측정한 결과도 n-hexane의 항산화력이 가장 우수하였고 ethylaceta, chloroform, n-butanol, water 순이었다. 이상의 결과 일당귀 추출물은 항산화 효과를 나타내는 물질을 함유하고 있는 것으로 판단되며, 이 원인물질에 대한 연구가 더 진행되어야 할 것이며, 일당귀 추출물의 in vitro 에서 항산화효능의 우수함을 통해 일당귀의 천연항산화제로서 개발 및 활용성을 기대해 본다.

Keywords

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