Decolorization Of Anthraquinone Dyes By Aspergillus Strains And Also Optimization Of Lignolytic Enzymes

Research Article
Srinu A., Vijaya Lakshmi D., Murali S and Prasad DVR
DOI: 
http://dx.doi.org/10.24327/ijrsr.2017.0807.0529
Subject: 
science
KeyWords: 
Isolation, Fungal strains, Decolorization, Optimization, Lignolytic enzymes.
Abstract: 

Isolation of Aspergillus fumigatus strain YHYS, Aspergillus tamarii strain SRRC 1088 around the textile industry effluents for the decolorization of anthraquinone dyes such as Remazol brilliant blue-R (RBBR), Brilliant blue-R (BBR) and Acid blue-25 (AB-25). Aspergillus fumigatus strain YHYS show the maximum decolorization with AB-25 (86.3%), minimum with RBBR (64.7%). Similarly Aspergillus tamarii strain SRRC 1088 show the maximum decolorization with RBBR (78.3%) and minimum activity with BBR (46.3%) at 35o C, pH-7.0. The lignolytic enzymes were responsible for the decolorization of dyes. The high MnP enzyme activity (33.9 U/ml), low LiP (31.3 U/ml) activity was produced by Aspergillus fumigatus strain YHYS. Similarly Aspergillus tamarii strain SRRC 1088 produced high MnP (287.6 U/ml) and minimum LiP (41.6 U/ml) activity. The enzyme production was optimized with different parameters the optimum pH for lignolytic enzymes was 3.5 at 30o C & 0.1% of Glucose and 0.05% of peptone sources.