Bioremediation of lignosulphonates by lignin-degrading basidiomycetous fungi

The capability of some ligninolytic fungi to degrade lignosulphonates has been studied. Three lignosulphonates concentrations, three culture media and seven different basidiomycetes in solid-cultures have been assayed to select the conditions for further experiments on submerged cultures. The best r...

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Bibliographic Details
Published in:Bioresource technology 2008-07, Vol.99 (11), p.4929-4934
Main Authors: Eugenio, M.E., Carbajo, J.M., Terrón, M.C., González, A.E., Villar, J.C.
Format: Article
Language:English
Subjects:
Acid bisulphite cooking
Agar
Basidiomycetes
Basidiomycota - enzymology
Basidiomycota - growth & development
Basidiomycota - metabolism
Biodegradation, Environmental
Biological and medical sciences
Biological Assay
Biotechnology
Color
Coriolus pubescens
Environment and pollution
Fundamental and applied biological sciences. Psychology
Industrial applications and implications. Economical aspects
Laccase
Laccase - metabolism
Lignin - analogs & derivatives
Lignin - metabolism
Lignosulphonates
Pulp industry
Pycnoporus sanguineus
Trametes
White-rot fungi
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Summary:The capability of some ligninolytic fungi to degrade lignosulphonates has been studied. Three lignosulphonates concentrations, three culture media and seven different basidiomycetes in solid-cultures have been assayed to select the conditions for further experiments on submerged cultures. The best results of growth and lignosulphonate decolourization in solid-cultures were obtained with Pycnoporus sanguineus, Coriolus pubescens and Trametes sp. I-62 on Kirk’s medium and 1% and 2% of lignosulphonate concentrations. In submerged cultures the lignosulphonate decolourization rate was generally higher when it was added on the 6th day, rather than when it was added from the beginning of the incubation and C. pubescens and P. sanguineus showed again the optimum results of decolourization. Extracellular laccase activity increased with lignosulphonate concentration in all assayed fungi, suggesting that lignosulphonate act as inductors of laccase activity.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2007.09.018