A screening using several fungi (Phanerochaete chrysosporium, Pleurotus ostreatus, Trametes versicolor and Aureobasidiumpullulans) was performed on the degradation of syringol derivatives of azo dyes possessing either carboxylic orsulphonic groups, under optimized conditions previously established by us. T. versicolor showed the best biodegradationperformance and its potential was confirmed by the degradation of differently substituted fungal bioaccessibledyes. Enzymatic assays (lignin peroxidase, manganese peroxidase, laccase, proteases and glyoxal oxidase) and GC-MSanalysis were performed upon the assay obtained using the most degraded dye. The identification of hydroxylatedmetabolites allowed us to propose a possible metabolic pathway. Biodegradation assays using mixtures of these bioaccessibledyes were performed to evaluate the possibility of a fungal wastewater treatment for textile industries.
展开▼
