Lignin degrading system of white-rot fungi and its exploitation for dye decolorization

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Abstract:



With global attention and research now focused on looking for the abatement of pollution, white-rot fungi is one of the hopes of the future. The lignin-degrading ability of these fungi have been the focus of attention for many years and have been exploited for a wide array of human benefits. This review highlights the various enzymes produced by white-rot fungi for lignin degradation, namely laccases, peroxidases, aryl alcohol oxidase, glyoxal oxidase, and pyranose oxidase. Also discussed are the various radicals and low molecular weight compounds that are being produced by white-rot fungi and its role in lignin degradation. A brief summary on the developments in research of decolorization of dyes using white-rot fungi has been made.Key words: lignin degradation, white-rot fungi, laccase, peroxidase, radicals, dye decolorization.

Le combat contre la pollution occupe de nos jours l'intérêt global et celui de la recherche. Les champignons de la pourriture blanche représentent dans le contexte actuel l'un des espoirs du futur. La capacité qu'ont ces champignons à dégrader la lignine a été au centre de nos attentions depuis plusieurs années et a été mise à contribution pour une grande variété d'applications utiles aux humains. Ce compte rendu met en évidence les diverses enzymes produites par les champignons de la pourriture blanche qui interviennent dans la dégradation de la lignine, notamment les laccases, les péroxydases, l'aryl alcool oxydase, la glyoxal oxydase et la pyranose oxydase. Nous exposons également les divers radicaux et composés à faible poids moléculaire qui sont produits par les champignons de la pourriture blanche et leurs rôles dans la dégradation de la lignine. Un bref résumé dépeint les progrès de la recherche sur la décoloration des teintures par l'usage de champignons de la pourriture blanche.Mots clés : dégradation de la lignine, champignons de la pourriture blanche, laccase, péroxydase, radicaux, décoloration des teintures.[Traduit par la Rédaction]

Keywords: dye decolorization; laccase; lignin degradation; peroxidase; radicals; white-rot fungi

Document Type: Research Article

Publication date: October 1, 2002

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  • Published since 1954, this monthly journal contains new research in the field of microbiology including applied microbiology and biotechnology; microbial structure and function; fungi and other eucaryotic protists; infection and immunity; microbial ecology; physiology, metabolism and enzymology; and virology, genetics, and molecular biology. It also publishes review articles and notes on an occasional basis, contributed by recognized scientists worldwide.
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