Research Article
Effect of Dye Structure on the Decolorisation Efficiency of Candida Tropicalis and Bacillus Firmus
| Sucharita Arora1*, Harvinder Singh Saini2 and Kamaljit Singh1 | |
| 1Department of Applied Chemical Sciences and Technology, Guru Nanak Dev University, India | |
| 2Department of Microbiology, Guru Nanak Dev University, Amritsar – 143 005, India | |
| Corresponding Author : | Dr. Sucharita Arora Department of Applied Chemical Sciences and Technology Guru Nanak Dev University Amritsar-143 005, India. Tel: +91-183-2258853 Fax: +91183-2258819-20 E-mail: sucharitaarora@yahoo. co.in |
| Received: October 13, 2011; Accepted: November 18, 2011; Published: November 20, 2011 | |
| Citation: Arora S, Saini HS, Singh K (2011) Effect of Dye Structure on the Decolorisation Efficiency of Candida Tropicalis and Bacillus Firmus. J Bioremed Biodegrad 2:131. doi:10.4172/2155-6199.1000131 | |
| Copyright: © 2011 Arora S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. | |
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Abstract
Heterocyclic monoazo disperse dyes constitute an important class of textile colorants and are used in the coloration of hydrophobic substrates, with a large share of all the disperse dyes being used for coloration of polyester and its blends. In view of the dearth of effective methods, the need to develop protocols for decolorisation/ degradation of these dyes is fuelled. Decolorisation/degradation of heterocyclic monoazo disperse dyes were tested using Candida tropicalis and Bacillus firmus respectively isolated from dye contaminated soil samples and sludge of domestic seweage drain and the correlation of decolorisation with dye molecular structure has been drawn with the microbial decolorisation efficiency. The results reveal that there is a significant difference between the decolorizing ability of Candida tropicalis and Bacillus firmus respectively, under their respective conditions. Degradation of dyes by both these cultures was driven by a qualitatively visualized hydrophilic-hydrophobic balance of the chromophores as well as the extent to which a dye was adsorbed on cell mass.
