The Metabolic Route of Degradation of the Vat Dye Sulfur Blue Brn and Corresponding Ecotoxic Effect

The dyes are a part of everybody’s life. These are mostly used to color textile, food, paper and as paint. Previously dyes from natural sources were mostly commonly used but with the advances of synthetic chemical sciences, the synthetic dye is a growing industry along with its widespread application. This has resulted in generation of large quantity of colored effluent having different ecotoxic effects. Of all the dyes the insoluble vat dyes are highly toxic as they tend to accumulate in the environment thus causing imbalance in the biodiversity. This investigation deals with one such vat dye sulphur blue BRN which is used in place of indigo to color jeans. The microorganism Pseudomonas has been found to carry out the degradation thus detoxifying it as exemplified in the mitotic index results of meristematic cells of Allium cepa. The hypothetical metabolic route for degradation is derived from Infrared spectroscopic data as well as GCMS data.