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Bioremediation of coloured pollutants by terrestrial versus facultative marine fungi

DRS at CSIR-National Institute of Oceanography

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Title Bioremediation of coloured pollutants by terrestrial versus facultative marine fungi
 
Creator Raghukumar, C.
 
Subject microorganisms
bioremediation
biodegradation
enzymes
pollutants
nutritional requirements
 
Description Lignin is a most complex heteropolymer and does not contain identical, readily hydrolysable repeating linkages at regular intervals as in other natural polymers such as cellulose, protein or nucleic acids. The random nature of the structure of the lignin requires lignin degradation to function in a non-specific manner. As a result, other compounds with aromatic structure such as many xenobiotic compounds are also highly susceptible to degradation by lignin-degrading enzymes. They are of particular interest from the standpoint of pollutant degradation as these enzymes unlike other peroxidases have a high oxidation-reduction potential and can potentially oxidize xenobiotics that are not attacked by other oxidases. The most efficient lignin-degraders are the white-rot fungi belonging to the group Basidiomycetes. Some of these lignin-degrading white-rot fungi are reported to decolourise coloured effluents from paper and pulp mills, synthetic days in waste waters from textile and dye-making industries and effluent containing molasses spent was from alcohol distilleries. Lignin-degrading enzymes have been shown to be actively involved in these colour-removal processes. In contrast, very little is known about lignin-degrading enzymes in marine fungi although marine fungi are isolated from driftwood, mangrove wood and other lignocellulose-containing substrates. An attempt has been made here to compare the lignin-degrading abilities of obligate and facultative marine fungi and their potential in bioremediation of coloured pollutants. The limitations in transferring bench-level results into practical application using such lignin-degrading fungi are discussed here.
 
Date 2008-08-05T11:17:49Z
2008-08-05T11:17:49Z
2002
 
Type Book Chapter
 
Identifier Fungi in marine environments. Ed. by: Hyde, K.D.(Fungal Diversity Res. Ser.). 317-344p.
http://drs.nio.org/drs/handle/2264/1366
 
Language en
 
Rights Fungal Diversity Press; Hong Kong; China
 
Publisher Fungal Diversity Press; Hong Kong; China