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Chemistry of Natural Compounds

, Volume 42, Issue 2, pp 160–163 | Cite as

Quantitative antioxidant activity of the ethylacetate extract of Larix sibirica bark and its individual components

  • V. R. Khairullina
  • G. G. Garifullina
  • A. Ya. Gerchikov
  • L. A. Ostroukhova
  • V. A. Babkin
Article

Abstract

The antioxidant [AO] properties of the ethylacetate extract of Larix sibirica bark and the flavonoids quercetin and dihydroquercetin found in it were studied using a model radical-chain oxidation of propan-2-ol in the kinetic regime. The quantitative characteristics of their AO activity were determined as effective rate constants fkln. It was found that dihydroquercetin had the highest AO activity among the studied natural compounds.

Key words

Larix sibirica Ledeb flavonoids antioxidants radical-chain reactions initiated oxidation inhibition rate Constant 

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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • V. R. Khairullina
    • 1
  • G. G. Garifullina
    • 1
  • A. Ya. Gerchikov
    • 1
  • L. A. Ostroukhova
    • 2
  • V. A. Babkin
    • 2
  1. 1.Bashkir State UniversityUfa
  2. 2.A. E. Favorskii Irkutsk Institute of Chemistry, Siberian DivisionRussian Academy of SciencesIrkutsk

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