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Comparative studies of fungal degradation of single or mixed bioaccessible reac...
Martins, M. Adosinda M.; Lima, Nelson; Silvestre, Armando J. D.; Queiroz, Maria João R. P.A screening using several fungi (Phanerochaete chrysosporium, Pleurotus ostreatus, Trametes versicolor and Aureobasidium pullulans) was performed on the degradation of syringol derivatives of azo dyes possessing either carboxylic or sulphonic groups, under optimized conditions previously established by us. T. versicolor showed the best biodegradation performance and its potential was confirmed by the degradatio...
Relationship of chemical structures of textile dyes on the pre-adaptation mediu...
Martins, M. Adosinda M.; Queiroz, Maria João R. P.; Silvestre, Armando J. D.; Lima, NelsonAzo dye derivatives of azobenzene constitute the largest group of dyes used in the textile industry and possess recalcitrant chemical groups, such as those of azo and sulphonic acid. Some microorganisms are able to degrade these aromatic compounds. In the present work, decolourisation of culture media containing azo dyes by the ligninolytic fungus Phanerochaete chrysosporium was achieved under nitrogenlimited c...
Biodegradation of bioaccessible textile azo dyes by Phanerochaete chrysosporium
Martins, M. Adosinda M.; Ferreira, Isabel C. F. R.; Santos, Isabel M.; Queiroz, Maria João R. P.; Lima, NelsonAzo 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 s...
Estudos de biodegradabilidade de corantes azo de aplicação têxtil por Phaneroch...
Martins, M. Adosinda M.; Ferreira, Isabel C. F. R.; Santos, Isabel M.; Queiroz, Maria João R. P.; Lima, NelsonSintetizaram-se corantes azo de aplicação têxtil, usando como componentes diazo ácidos aminobenzóicos e aminossulfónicos e como componentes de acoplamento 2- metoxifenol e 2,6-dimetoxifenol. A utilização destas componentes de acoplamento teve como objectivo aumentar a bioacessibilidade dos corantes ao fungo lenhinolítico da podridão branca Phanerochaete chrysosporium, já que estes grupos estão presentes na estr...
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