Korean Journal of Plant Resources (한국자원식물학회지)

The Plant Resources Society of Korea (한국자원식물학회)
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Isolation of main component and antioxidant activities on the stem and root of Rosa rugosa

해당화 줄기 및 뿌리의 주성분 분리 및 항산화활성

  • Park, byoung-Jae (SVBL, National University Corporation Kitami Institute of Technology)
  • Published : 2008.10.31
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Abstract

Total phenol content was obtained from the stem extract of 7.8 (g/100g, D.W.) and root extract of 10.5 (g/100g, D.W.) on Rosa rugosa. S-4 and R-2 compounds were isolated from the stem and root of R. rugosa. The structure of S-4 and R-2 compounds was assigned as catechin by $^{1}H,\;^{13}C$ CNMR signal and TOF-MS. The tannin content of stem extract was 752.5 (mg/100g, D.W.) as 6.3 of gallic acid, 61.5 of epicatechin and 684.8 of catechin. The tannin content of root extract was higher about 2 times (1676.0) as 6.8 of gallic acid, 160.3 of epicatechin and 1508.5 of catechin than that of stem. It was shown that catechin was main compound in the stem and root extracts of R. rugosa. Antioxidant activities were stronger low concentration, and were not different of stem and root extracts. As the results, stem and root of R. rugosa were evaluated, as natural antioxidant resource.

1. 해당화의 총페놀화합물 함량은 줄기추출물이 평균 7.8(g/100g, D.W.)이고 뿌리추출물이 평균 10.5(g/100g, D.W.)이며, 모든 시료에서 뿌리추출물의 함량이 높게 나타났다. 2. K-1의 줄기와 뿌리 추출물(0.5g)에서 주성분의 하나로 추정되는 S-4(84.1mg)과 R-2(70.0mg)의 화합물을 단리했고, 그 구조를 catechin으로 결정했다. 3. UPLC 분석에 의해 줄기추출물의 탄닌함량은 평균 752.5(mg/100g, D. W.)로, gallic acid 6.3, epicatechin 61.5, catechin 684.8이고, 뿌리추출물의 탄닌함량은 줄기의 약 2배 이상 높은 1676.0(mg/100g, D.W.)으로 gallic acid 6.8, epicatechin 160.3, catechin 1508.5로 나타났다. 4. 해당화의 free radical 소거활성에서 추출물의 IC50는 뿌리가 $13.7{\mu}g/ml$, 줄기가 $14.5{\mu}g/ml$으로 높은 소거활성을 나타냈고, SOD 유사활성은 $50{\mu}g/ml$의 농도에서 뿌리추출물이 평균 75.1%, 줄기추출물이 71.9%로써 높은 활성을 나타냈다.

Keywords

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