Evaluation of Antioxidant Activity of Solvent Fractions of Angelica gigas Root Using TOSC Assay

TOSC 방법을 이용한 참당귀 뿌리 용매분획(Angelica gigas)의 항산화 활성 평가

  • Lee, Sook-Young (Department of Herbal Resources, Professional Graduate School of Oriental Medicine, Wonkwang University) ;
  • Seo, Young-Bae (Department of Herbalogy, College of Oriental Medicine, Daejeon University) ;
  • Woo, Won-Hong (Department of Herbal Resources, Professional Graduate School of Oriental Medicine, Wonkwang University)
  • 이숙영 (원광대학교 한의학전문대학원 한약자원개발학과) ;
  • 서영배 (대전대학교 한의과대학 한의학과) ;
  • 우원홍 (원광대학교 한의학전문대학원 한약자원개발학과)
  • Received : 2010.12.13
  • Accepted : 2011.01.10
  • Published : 2011.01.30

Abstract

Objectives: The aim of this study was to elucidate the antioxidant effect of solvent fractions of Angelica gigas root. Methods: The ethanol extract of Angelica gigas root was suspended in water and then partitioned with dichloromethane (MC Fr.), ethyl acetate (EA Fr.) and butanol (BuOH Fr.), sequentially. The antioxidant activities of solvent fractions of Angelica gigas root were evaluated for radical scavenging activity against stable free radicals (2,2-diphenyl-1-picrylhydrazyl) DPPH, hydrogen peroxide and superoxide anion radicals. In addition the antioxidant activities of solvent fractions of Angelica gigas root against peroxyl radicals, hydroxyl radicals and peroxynitrites were determined by the total oxy-radical scavenging capacity (TOSC) assay. Results: Among the solvent fractions of MC Fr., EA Fr., and BuOH Fr., BuOH Fr. was found to have stronger antioxidant activity with $IC_{50}$ values of 59.72, 14.36, 30.96 and $44.75\;{\mu}g/m{\ell}$ on the DPPH radical, nitrite, superoxide anion and hydrogen peroxide, respectively, than BHA used as a positive control. Moreover, specific TOSC values(564.8, 276.4 and 405.5 TOSC/mM) of BuOH fr. against peroxyl radicals, hydroxyl radical and peroxynitrite were 4 times higher than GSH (136.5, 67.4 102.6 TOSC/mM) used as a positive control. Conclusions: These results suggest that the BuOH fr. of Angelica gigas root has a high antioxidant activity and can be useful to develop functional food against oxidative stress conditions.

Keywords

References

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