Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Studies on Biological Activity of Wood Extractives(XVI) -Antioxidant Components from the Bark of Rbus chinensis-

  • Lee, Yeon-Suk (School of Forest Resources, Chungbuk National University) ;
  • Park, Youngki (Division Biotechnology, Korea Forest Research Institute) ;
  • Lee, Oh-Kyu (Division Wood Chemistry & Microbiology, Korea Forest Research Institute) ;
  • Park, Il-Kwon (Division Forest Insect Pestes and Disease, Korea Forest Research Institute) ;
  • Shin, Sang-Chul (Division Forest Insect Pestes and Disease, Korea Forest Research Institute) ;
  • Kang, Ha-Young (Division Wood Chemistry & Microbiology, Korea Forest Research Institute) ;
  • Choi, Don-Ha (Division Wood Chemistry & Microbiology, Korea Forest Research Institute) ;
  • Choi, Tae-Ho (School of Forest Resources, Chungbuk National University) ;
  • Lee, Hak-Ju (Division Wood Chemistry & Microbiology, Korea Forest Research Institute)
  • Received : 2005.03.21
  • Accepted : 2005.04.20
  • Published : 2005.09.25
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Abstract

Six compounds were isolated from the EtOAc and $Et_2O$ fractions of the bark of Rhus chinensis by repeated column chromatography with $SiO_2$ and Sephadex LH-20. The structures were determined by instrumental analysis using MS and NMR spectrophotometer as: gallic acid (1), methyl gallate (2), 6, 7-dimethoxycoumarin (3), orcinol-${\beta}$-D-glucoside (4), scopoletin (5), semialactone (6). Among these compounds, 6,7-dimethoxycoumarin (3) was isolated from this plant for the first time. To measure the antioxidant activity, the DPPH radical scavenging activity test was performed. Gallic acid (1) showed the strongest activity, while orcinol-${\beta}$-D-glucoside (4), semialactone (5) and scopoletin (6) had the low activities.

Keywords

References

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