alexa Evaluation of Methyl Red Tolerant Cyanobacteria for Sim
E-ISSN: 2252-5211

International Journal of Waste Resources
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Research Article

Evaluation of Methyl Red Tolerant Cyanobacteria for Simultaneous Laccase Production and Dye Decolorization

Mohd Kafeel Ahmad Ansari1*, Umar Mohteshum Khatib1, Gary Owens2 and Tasneem Fatma1

1Cyanobactrial Biotechnology Laboratory, Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), New Delhi, 110025, India

2Environmental Contaminants Group, Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia

Corresponding Author:
Mohd Kafeel Ahmad Ansari
Cyanobactrial Biotechnology Laboratory, Department of Biosciences
Faculty of Natural Sciences, Jamia Millia Islamia (A Central University)
New Delhi, 110025, India
Tel: +91-11-6921908-3414
E-mail: [email protected]

Received Date: May 19, 2016; Accepted Date: May 31, 2016; Published Date: June 07, 2016

Citation: Ansari MKA, Khatib UM, Owens G, Fatma T (2016) Evaluation of Methyl Red Tolerant Cyanobacteria for Simultaneous Laccase Production and Dye Decolorization. Int J Waste Resour 6:221. doi:10.4172/2252-5211.1000221

Copyright: © 2016 Ansari MKA, 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.



While the textile industries have and will continue to play a vital role in the economic growth of India one unfortunate historic side effect has been the ubiquitous use of synthetic azo dyes which pose potential threat to aquatic environmental ecosystems if effluent from such industries is left untreated. In this study, of the ten cyanobacterial strains tested, six were found to tolerate exposure to a test methyl red (MR) dye well as indicated good cell growth. Further investigation of the concentration of various photosynthetic pigments, and the production of phenol degrading laccase enzymes in the bacteria in the presence of MR dye indicated that all six tolerant strains (Spirulina-C5, Spirulina-C10, Spirulina-C11, Lyngbya, Phormidium and Synechocystis) exhibited a significantly higher concentration (P<0.05) of pigments and significantly higher production (P<0.05) of extracellular proteins in the presence of dye. The best performing strain, Spirulina-C11, produced significantly greater amounts of laccase (59.57 mU/ml) at 10 days relative to all other strains which was further enhanced (71.52 mU/ml) following addition of guaiacol as an inducer. Guaiacol also induced increased protein content that may was attributed to an increase in de nova synthesis of phenol degrading enzymes and stress tolerance proteins. In practice Spirulina-C11 was able to effectively decolorize 65.2% of methyl red solution within 48 hrs.


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