Journal of Microbiology and Biotechnology

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Two p-Terphenyls from Mushroom Paxillus panuoides with Free Radical Scavenging Activity

  • Yun, Bong-Sik (Korea Research Institute of Bioscience and Biotechnology) ;
  • Lee, In-Kyoung (Korea Research Institute of Bioscience and Biotechnology) ;
  • Kim, Jong-Pyung (Korea Research Institute of Bioscience and Biotechnology) ;
  • Yoo, Ick-Dong (Korea Research Institute of Bioscience and Biotechnology)
  • Published : 2000.04.01
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Abstract

As part of a continuing investigation to identify free radical scavengers from the fruit bodies of basidiomycetes, we isolated two p-terphenyl compounds, designated as PAl and PA2l, from cethanolic extract of the fruit body of Pasillus panuoides. The methanolic extract was processed by ethyl acetate extraction and silica gel column chromatography to yield two active fraction. PAl was obtained from one of the fractions through Sephadex LH-20 and silica gel column chromatographies and reverse-phase HPLC. The other fraction was purified by Sephadex LH-20 and reverse-phase column chromatographies to produce PA2. The compounds PA1 and PA2 were identified as leucomentin-4 and leucomentin-2, respectively, on the basis of various spectroscopic analyses. These compounds exhibited strong inhibitory activities against lipid peroxidation in rat liver microsomes with IC_{50}$ values of 0.10 and $0.06{\;}\mu\textrm{g}ml$, respectively.

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