Decolorization pathways of anthraquinone dye Disperse Blue 2BLN by Aspergillus sp. XJ-2 CGMCC12963.
Anthraquinone dye represents an important group of recalcitrant pollutants in dye wastewater. Aspergillus sp XJ-2 CGMCC12963 showed broad-spectrum decolorization ability, which could efficiently decolorize and degrade various anthraquinone dyes (50 mg L-1) under microaerophilic condition. And the decolorization rate of 93.3% was achieved at 120 h with Disperse Blue 2BLN (the target dye). Intermediates of degradation were detected by FTIR and GC-MS, which revealed the cleavage of anthraquinone chromophoric group and partial mineralization of target dye. In addition, extracellular manganese peroxidase showed the most closely related to the increasing of decolorization rate and biomass among intracellular and extracellular ligninolytic enzymes. Given these results, 2 possible degraded pathways of target dye by Aspergillus sp XJ-2 CGMCC12963 were proposed first in this work. The degradation of Disperse Blue 2BLN and broad spectrum decolorization ability provided the potential for Aspergillus sp XJ-2 CGMCC12963 in the treatment of wastewater containing anthraquinone dyes.
['Pan|Huiran|H|', 'Xu|Xiaolin|X|', 'Wen|Zhu|Z|', 'Kang|Yanshun|Y|', 'Wang|Xinhao|X|', 'Ren|Youshan|Y|', 'Huang|Danqi|D|']
D000880:Anthraquinones D001230:Aspergillus D003116:Color D004396:Coloring Agents D053858:Metabolic Networks and Pathways D008954:Models, Biological D010544:Peroxidases D013045:Species Specificity D062065:Waste Water D014874:Water Pollutants, Chemical D018508:Water Purification
anthraquinone dyes Aspergillus ligninolytic enzymes degradation pathway textile effluents