Antioxidant Effect of the Fraction Isolated from Pyrus ussuriensis Leaves

산돌배나무(Pyrus ussuriensis) 잎 분획물의 항산화 효과

  • 이창언 (대구한의대학교 화장품약리학과) ;
  • 김영훈 ((주)메디웨이코리아 피부과학연구소) ;
  • 이병근 (영남대학교 산림자원학과) ;
  • 이도형 (영남대학교 산림자원학과)
  • Received : 2010.08.26
  • Accepted : 2010.10.05
  • Published : 2010.12.30

Abstract

This study was conducted to confirm the application as ingredients of cosmetics through an examination of the function for anti-oxidant activity of the fraction isolated from Pyrus ussuriensis leaves. The dried leaf of Pyrus ussuriensis were extracted with acetone-$H_2O$ (6:4, v/v), concentrated and fractionated with the upper layer of acetone on a separatory funnel. Each fraction was freeze dried, then a portion of acetone soluble powder was chromatographed on a Sephadex LH-20 column using a series of aqueous methanol as eluents and also used the MIC-gel using a series of aqueous methanol as developing solvent. The isolated compounds were identified by silica-gel TLC. The concentration of total phenolic compound of Pyrus ussuriensis acetate soluble fraction was high, 914 mg/g. The results obtained from the analyses of the anti-oxidanat effects of Pyrus ussuriensis acetate fraction can be summarized as follows: In the result of DPPH scavenging radical activity, Pyrus ussuriensis acetate soluble fraction showed more than 80% at 100 ppm. SOD-like activity of one of Pyrus ussuriensis acetate soluble fractions was 77% at 1000 ppm. Xanthine oxidase inhibition of Pyrus ussuriensis acetate soluble fraction was 38% at 100 ppm. From these results, we confirmed that acetate fraction of Pyrus ussuriensis has a great potential as a natural ingredients with a natural antioxidant and antimicrobial source.

본 연구는 산돌배나무(Pyrus ussuriensis) 잎에서 추출한 분획물의 항산화능을 조사하여 화장품소재로 적용 가능성을 확인하기 위하여 수행하였다. 산돌배나무 잎을 채취하여 건조시킨 후 분쇄하여 60% acetone-$H_2O$(6:4, v/v)로 추출하고, 아세톤 가용부를 분획하여 동결건조 시켰다. 아세톤 및 물 가용부를 Sephadex LH-20으로 충진한 칼럼에서 메탄올 MeOH을 용출용매로 사용하여 칼럼크로마토그래피를 실시하고 또한 MeOH를 전개용매로 사용한 MICgel을 이용했다. 단리된 화합물들은 Silica-gel TLC로 확인하였다. 폴리페놀 함량은 산돌배나무 잎의 아세톤 분획물에서 914 mg/g으로 정량되어 높은 함량이었다. 산돌배나무 잎의 아세톤 분획물을 이용하여 항산화효과를 분석하여 얻은 결론을 요약하면 다음과 같다. 전자공여능의 경우 산돌배나무 잎의 아세톤 분획물의 100 ppm농도에서 80%이상의 전자공여능을 나타내었다. 산돌배나무 잎의 아세톤 분획물 중 한 분획물의 Superoxide dismutase(SOD) 유사활성은 1000 ppm에서 77%의 활성을 보였다. 분획물의 Xanthine oxidase 저해능은 10 ppm에서 38%의 저해률을 보였다. 이상의 결과로 미루어 보아 산돌배나무 잎의 아세톤 분획물은 항산화효과를 가진 천연소재임을 확인할 수 있었다.

Keywords

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