• Title/Summary/Keyword: Paxillus curtisii

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p-Terphenyls from Fungus Paxillus curtisii Chelate Irons: A Proposed Role of p-Terphenyls in Fungus

  • Lee, In-Kyoung;Ki, Dae-Won;Kim, Seong-Eun;Lee, Myeong-Seok;Song, Ja-Gyeong;Yun, Bong-Sik
    • Journal of Microbiology and Biotechnology
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    • v.23 no.5
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    • pp.652-655
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    • 2013
  • Diverse p-terphenyl compounds, named curtisians, have been isolated from the fungus Paxillus curtisii, and degradation of wood by this fungus is thought to be progressed by iron chelation of p-terphenyl curtisians. In this study, the iron chelation ability of p-terphenyls has been proved by chrome azurol S (CAS) assay, reducing power, and UV-visible spectroscopic analyses. The catechol moiety of p-terphenyl is an essential factor for the potent iron chelation ability, and thus deacylated curtisian with a tetrahydroxyl moiety in the central ring of p-terphenyl is more effective than acylated curtisians.

Characteristics of Antimicrobial Activities for the Human Pathogenic Microorganism by Extracts from Korean Mushrooms (버섯 추출물이 인체 병원성 균에 미치는 항균활성의 특성)

  • Kim, Sung-Tae;Lee, Kang-Hyeob;Min, Tae-Jin
    • The Korean Journal of Mycology
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    • v.31 no.2
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    • pp.67-76
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    • 2003
  • This study was performed to screen antimicrobial activities of 198 extracts from 66 Korean mushrooms against 19 human pathogenic microorganisms using paper disc method. Mushrooms were extracted with petroleum ether 80% ethanol and distilled water in that order Among the extracts with antimicrobial activities, 1 water extract of Amanita virgineoides, 8 ethanolic extracts including Amanita and 1 petroleum ether extrac of Psathyrella hydrophila were highly active against fungi, respectively. In addition to, 24 extracts including Amanita pseudoporphyria, Amanita spissacea, 3 extaracts including Paxillus curtisii were highly active against Gram negative and positive bacteria, respectively.