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Open Access item Biodegradation of lignocellulosics: microbial, chemical, and enzymatic aspects of the fungal attack of lignin

Other Titles:Biodegradación de la lignocelulosa: aspectos microbiológicos, químicos y enzimáticos del ataque fúngico a la lignina
Authors:Martínez, Ángel T.
Speranza, Mariela
Ruíz-Dueñas, Francisco Javier
Ferreira, Patricia
Camarero, Susana
Guillén, Francisco
Martínez, María Jesús
Gutiérrez Suárez, Ana
Río Andrade, José Carlos del
Keywords:Wood-rotting fungi, Lignin, Analytical Pyrolysis, Oxidoreductases, Catalytic mechanisms
Issue Date:Sep-2005
Publisher:Sociedad Española de Microbiología
Citation:Int. Microbiol 8(3): 195-204(2005)
Abstract:Wood is the main renewable material on Earth and is largely used as building material and in paper-pulp manufacturing. This review describes the composition of lignocellulosic materials, the different processes by which fungi are able to alter wood, including decay patterns caused by white, brown, and soft-rot fungi, and fungal staining of wood. The chemical, enzymatic, and molecular aspects of the fungal attack of lignin, which represents the key step in wood decay, are also discussed. Modern analytical techniques to investigate fungal degradation and modification of the lignin polymer are reviewed, as are the different oxidative enzymes (oxidoreductases) involved in lignin degradation. These include laccases, high redox potential ligninolytic peroxidases (lignin peroxidase, manganese peroxidase, and versatile peroxidase), and oxidases. Special emphasis is given to the reactions catalyzed, their synergistic action on lignin, and the structural bases for their unique catalytic properties. Broadening our knowledge of lignocellulose biodegradation processes should contribute to better control of wood-decaying fungi, as well as to the development of new biocatalysts of industrial interest based on these organisms and their enzymes.
URI:http://hdl.handle.net/10261/1996
ISSN:1139-6709 (versión impresa)
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