Demethylation and desulfonation of textile industry dye, Thiazole Yellow G by Aspergillus niger LAG

Bankole, P.O. and Adekunle, A.A. and Govindwar, S.P. (2019) Demethylation and desulfonation of textile industry dye, Thiazole Yellow G by Aspergillus niger LAG. Biotechnology Reports, 23. ISSN 2215-017X

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Abstract

Filamentous fungi perform tremendously in adsorption of dyes from polluted environment. In this study, Aspergillus niger LAG decolorized thiazole yellow G dye within 5 days. Scale up studies done revealed that maximum decolorization (98%) was achieved at a concentration (10 mg L −1 ), temperature (35 °C) and pH 6. The fungus exhibited significant inductions in laccase (71%) and lignin peroxidase (48%) respectively. Spectrometric analysis (UV–vis, HPLC and gas chromatography-mass spectrometry) was used in analyzing the degraded products of the dye. The GCMS analysis revealed the production of two metabolites; sodium 6-methyl-2-phenyl-1,3-benzothiazole-7-sulfonate and 2-phenyl-4,5-dihydro-1,3-thiazole after degradation of thiazole yellow G dye. A metabolic pathway of thiazole yellow G dye degradation by Aspergillus niger was proposed. Significant growth in plumule and radicle couple with an attendant increase in germination further confirmed the detoxified status of the dye after degradation. © 2019

Item Type:
Journal Article
Journal or Publication Title:
Biotechnology Reports
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2400/2402
Subjects:
ID Code:
133181
Deposited By:
Deposited On:
25 Apr 2019 08:35
Refereed?:
Yes
Published?:
Published
Last Modified:
30 Sep 2020 08:50