Relationship between production of hydroxyl radicals and degradation of wood, crystalline cellulose, and a lignin-related compound or accumulation of oxalic acid in cultures of brown-rot fungi

摘要: The degradation of wood, filter paper cellulose, and a lignin-substructure model, was measured in cultures seven fungi usually regarded as brown-rot fungi. Hydroxyl radical production the accumulation oxalic acid were also measured. Four fungi, Gloeophyllum trabeum, Tyromyces palustris, Laetiporus sulphureus, Postia placenta, typical that they preferentially degraded eliminated polysaccharides wood produced large amounts hydroxyl radical. rates generation four directly proportional to lignin-related compound, inversely amount cultures. Two Daedalea dickinsii Lentinus lepideus, did not degrade any substrates significantly very little Coniophora puteana had highest rate cellulose degradation, but or lignin model only negligible These results indicate produce for crystalline cellulose.