Congo red degrading laccases from Bacillus amyloliquefaciens strains isolated from salt spring in Serbia
Abstract
Halotolerant strains of Bacillus amyloliquefaciens were isolated from salt spring in Ovca spa located in Republic of Serbia. Strains exhibit robust spore laccase with high temperature optimum of 65 degrees C while pH optimum is wide and substrate dependant. Ability to oxidize azo dyes was demonstrated. Under optimized conditions more than 85% removal of Congo red dye was achieved at pH 5.7. Substantial resistance to inhibition by high concentration of chloride ions was observed and tolerance of some commonly used cosolvents shows that applicability of these laccases goes beyond decolorization of textile effluents.
Keywords:
Bacillus amyloliquefaciens / Laccase / Decolorization / Reactive dye / Congo red / Azo dyeSource:
International Biodeterioration & Biodegradation, 2014, 91, 18-23Publisher:
- Elsevier Sci Ltd, Oxford
Projects:
- Production, purification and characterization of enzymes and small molecules and their application as soluble or immobilized in food biotechnology, biofuels production and environmental protection (RS-172048)
- ICGEB research [CRP/YUG11-02]
DOI: 10.1016/j.ibiod.2014.03.008
ISSN: 0964-8305