Antioxidant compounds from the stem bark of Sorbus commixta

  • Na, Min-Kyun (College of Pharmacy, Chungnam National University) ;
  • An, Ren-Bo (College of Pharmacy, Chungnam National University,College of Pharmacy, Yanbian University) ;
  • Lee, Sang-Myung (Korea Research Institute of Bioscience and Biotechnology) ;
  • Min, Byung-Sun (Korea Research Institute of Bioscience and Biotechnology) ;
  • Kim, Young-Ho (College of Pharmacy, Chungnam National University) ;
  • Bae, Ki-Hwan (College of Pharmacy, Chungnam National University) ;
  • Kang, Sam-Sik (Natural Products Research Institute, Seoul National University)
  • Published : 2002.03.01

Abstract

The MeOH extract of Sorbus commixta (Rosaceae) exhibited strong DPPH radical scavenging activity, and through activity-guided fractionation two antioxidant compounds were isolated and identified as $catechin-7-O-{\beta}-D-xylopyranoside$ (1) and $catechin-7-O-\;{\beta}-D-apiofuranoside$ (2) by physicochemical and spectrometric methods. To evaluate the antioxidant effect of these compounds, some in vitro tests, such as the DPPH radical scavenging activity test, the superoxide radical scavenging activity test and the lipid peroxidation inhibitory activity test, were performed. Compounds 1 and 2 showed stronger activities than both a-tocopherol and butylated hydroxy anisole (BHA) in each assay.

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References

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