The decolourization yield was determined by the percent (%) of
absorbance reduction between the initial absorbance of the dye
effluent and after decolourization at the l max along the time. The
biodegradation yield was determined by the difference (in %) between
the initial COD of the textile effluent and the COD of the
treated textile effluent along the time. In addition, the phenomenon
of adsorption was demonstrated to confirm whether the
decolourization process was due to biological degradation/transformation
or adsorption. The NaOH extraction method, described
by Jiranuntipon et al. (2008) was used. The suspended fungi pellets
were mixed in equal volume of NaOH (0.1 M) to extract color
substances adsorbed to the cell surface. The extracts were centrifuged
and absorbance was measured at 620 nm.