Comparison on the Antioxidative Activity of Ethanol and Hot Water Extracts of Euphorbia supina Rafinesque

애기땅빈대의 열수 추출 및 에탄올 추출물의 항산화 활성 비교

  • Kang, Ran-Yi (Department of Pathology, College of Oriental Medicine, Daejeon University) ;
  • Choi, Hak-Joo (Traditional and Biomedical Research Center(TBRC), Daejeon University) ;
  • Bak, Ji-Won (Department of Pathology, College of Oriental Medicine, Daejeon University) ;
  • Sim, Boo-Yong (Department of Pathology, College of Oriental Medicine, Daejeon University) ;
  • Lee, Hae-Jin (Traditional and Biomedical Research Center(TBRC), Daejeon University) ;
  • Kim, Dong-Hee (Department of Pathology, College of Oriental Medicine, Daejeon University)
  • Received : 2014.07.23
  • Accepted : 2014.08.05
  • Published : 2014.08.20

Abstract

Objectives : In this study, the antioxidant activities of the 80% ethanol and hot water extracts of Euphorbia supina Rafinesque were investigated. Methods : We measured total phenol contents, flavonoid contents, 2,2-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assay, 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical scavenging assay. The production of reactive oxygen species was measured in LPS-induced RAW 264.7 cells using flow cytometry system. Results : The content of phenol in the hot water extract was $65.529{\pm}0.462mg/g$ and $126.932{\pm}1.894mg/g$ in the 80% ethanol extract, and that of flavonoid in the hot water extract was $16.063{\pm}0.471mg/g$ and $29.159{\pm}1.963mg/g$ in the ethanol extract. The 80% ethanol extract also showed higher DPPH and ABTS radical scavenging activities ($90.8{\pm}1.0%$ and $92.5{\pm}0.7%$) than the hot water extract ($81.5{\pm}0.5%$ and $91.5{\pm}0.2%$). The production of reactive oxygen species(ROS) was reduced dose-dependently by 80% ethanol and hot water extract at concentration of 1, 10 and $100{\mu}g/m{\ell}$ of RAW 264.7 cells. Conclusion : According to these results, the 80% ethanol extract of Euphorbia supina Rafinesque has a good anti-oxidative effects than the hot water extract. Thus, the 80% ethanol extract of Euphorbia supina Rafinesque may serve as useful natural antioxidants.

Keywords

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