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논문 상세정보

비파 잎의 추출용매별 항산화성 검증과 활성물질의 분리 및 동정

Isolation and Identification of Antioxidant Compounds of Various Solvents Extracted from Eriobotrya japonica Leaves

초록

비파 잎의 항산화 활성을 탐색하고 활성물질을 분리하여 규명하기 위하여, 동결 건조한 비파 잎을 마쇄하여 n-hexane, ethyl acetate (EtOAc)와 methanol (MeOH)로 용매 분획하였다. 각 추출물에 대하여 정량적으로 DPPH 소거활성, SOD 유사활성을 측정하고, 페놀 화합물과 플라보노이드 함량을 측정하였으며, 각 용매에 따른 추출물 중 비교적 활성이 강한 EtOAc 추출물과 MeOH 추출물에 대하여 column chromatography를 이용하여 얻은 분획물들 중 강한 활성을 보인 각 1개의 분획물에서 3개의 화합물을 분리하였으며, GC/MS 분석에서 phytol, ${\beta}$-sitosterol 및 (-)-Loliolide으로 동정하였다.

Abstract

To investigate potential medicinal or functional uses of Eriobotrya japonica, this study focused on the isolation and identification of antioxidant compounds from Eriobotrya japonica leaves. Various solvents were extracted from the leaves, and their scavenging effect on 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals was measured, in addition to their superoxide dismutase-like activity, polyphenol compounds, and flavonoid content. Ethyl acetate extract exhibited the strongest scavenging effect in a 0.2 mM solution of DPPH ($63.24{\pm}2.20%$, $81.83{\pm}2.10%$, and $93.15{\pm}2.31%$ in 0.3, 0.7, and 1.0 mg/ml sample concentrations, respectively). The antioxidant effect of the ethyl acetate extract and methanol extract were generally stronger than that of n-hexane extract. The extracts were further purified by repeated silica gel column chromatography. The antioxidant compounds were identified as phytol, ${\beta}$-sitosterol, and (-)-loliolide using GC/MS.

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  1. 2014. "" 원예과학기술지 = Korean journal of horticultural science & technology, 32(4): 558~570 

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