Volume No. 10 Issue No.: 2 Page No.: 277-284 October-December 2015

 

BIODEGRADATION OF AZO DYES BY A NEWLY ISOLATED WHITE ROT FUNGUS Basidiomycota sp.

 

Mahajan R. T. and Narkhede M. K.

Department of Biotechnology and Zoology, Moolji Jaitha College, Jalgaon, Maharashtra (INDIA)

 

Received on : July 20, 2015

 

ABSTRACT

 

Synthetic dyes are extensively used in textile industry, paper printing and color photography and as additives in petroleum products. In the textile industry, up to 50% of the dyes are lost after the dyeing process and 1015% of dye is discharged in the effluent. Among the synthetic dyes released in effluents, azo dyes is one of the most detrimental class because it is highly persistent in the aquatic environment, due to its chemical compositions, involving aromatic rings, azoic linkages and amino groups. The removal of hazardous compounds from the industrial effluents is one of the growing needs of the current issues. The present study deals with an application of a potent laccase producer Basidiomycota sp. for its effective remediation towards azo dyes. The isolate is able to decolorize three different azo dyes in mineral medium. Among the three azo dyes, acid orange 52 was only 34% decolorized, while acid red 2 and direct red 28 were decolorized to 100% and 90%, respectively. In addition, the laccase produced by the isolate also potently decolorized and degraded all three azo dyes. Noticeable effect of 1- hydroxybenzotriazole as mediator, on the decolourization was recorded. Fourier transform infrared spectral analysis of products indicated degradation of the azo dyes. This evidently suggests that laccase produced by this fungus serves as a promising candidate with bioremediation prospects.

 

Keywords : Basidiomycota sp., Azo dyes, Aioremediation, Hydroxybenzotriazole, Fungus

 

 

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