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TitleBiodegradation of bioaccessible textile azo dyes by Phanerochaete chrysosporium
Author(s)Martins, M. Adosinda M.
Ferreira, Isabel C. F. R.
Santos, Isabel M.
Queiroz, Maria João R. P.
Lima, Nelson
KeywordsAzo dyes
Chemical structure/extent of biodegradation
White rot fungus
Phanerochaete chrysosporium
chemical structure
extent of biodegradation
Issue date2001
PublisherElsevier Science
JournalJournal of Biotechnology
Citation"Journal of biotechnology". ISSN 0168-1656. 89 (2001) 91-98.
Series/Report no.2001
Abstract(s)Azo dyes are important chemical pollutants of industrial origin. Textile azo dyes with bioaccessible groups for lignin degrading fungi, such as 2-methoxyphenol (guaiacol) and 2,6-dimethoxyphenol (syringol), were synthesised using different aminobenzoic and aminosulphonic acids as diazo components. The inocula of the best biodegradation assays were obtained from a pre-growth medium (PAM), containing one of the synthesised dyes. The results of the dye biodegradation assays were evaluated every 7 days, by the decrease of the absorbance at the maximum wavelength of the dye, by the decrease of the sucrose concentration in the culture medium and by the increase of the biomass during the 28 days of assay. It was observed that the extent of dye biodegradation depended on the sucrose concentration, on the degraded dye structure and, on the dye present in the PAM medium.
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series
DCILM - Artigos (Papers)

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