Polymerization of pentachlorophenol and ferulic acid by fungal extracellular lignin-degrading enzymes
نویسندگان
چکیده
منابع مشابه
Polymerization of pentachlorophenol and ferulic acid by fungal extracellular lignin-degrading enzymes.
High-molecular-weight polymers were produced by a crude concentrated supernatant from ligninolytic Phanerochaete chrysosporium cultures in a reaction mixture containing pentachlorophenol and a humic acid precursor (ferulic acid) in the presence of a detergent and H2O2. Pure manganese peroxidase, lignin peroxidase, and laccase were also shown to catalyze the reaction.
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The major products of the initial steps of ferulic acid polymerization by lignin peroxidase included three dehydrodimers resulting from beta-5' and beta-beta'coupling and two trimers resulting from the addition of ferulic acid moieties to decarboxylated derivatives of beta-O-4'- and beta-5'-coupled dehydrodimers. This is the first time that trimers have been identified from peroxidase-catalyzed...
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Agaricus bisporus, grown under standard composting conditions, was evaluated for its ability to produce lignin-degrading peroxidases, which have been shown to have an integral role in lignin degradation by wood-rotting fungi. The activity of manganese peroxidase was monitored throughout the production cycle of the fungus, from the time of colonization of the compost through the development of f...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 1996
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.62.10.3890-3893.1996