摘要：In this study, we report the decolorization of drimarene blue by Aspergillus niger. As evident from UV/Vis. spectroscopic results, the maximum decolorization (95%) was achieved in 5 days under normal atmospheric conditions. Similarly, the selected fungi (Aspergillus niger) showed the best decolorization in presence of 0.5 g/L glucose as a supplement in the medium. The secondary metabolites formed after the decolorization were characterized by FTIR and Mass Spectrometry. Although the mass spectra of the dye showed the same fragmentation pattern for the samples studied under different experimental environments, it was not easy to understand whether fragments are obtained during the course of decolorization by A. niger or result of ionization within the machine. The FTIR results are interesting which shows that the dye structure has not been entirely degraded by the fungal strain rather the chro- mophore has been disturbed by the reduction of C=O groups which in turn disturbs the delocalized electrons throughout the structure and hence the dye decolorizes. From MS and FT-IR analysis, it was concluded that the reduction of C=O bond is the predominant reason for decolorization as extensive decomposition has not been observed.
