Extracellular laccase production and its optimization from Arthrospira maxima catalyzed decolorization of synthetic dyes

الملخص EN

In the present study laccase production potential of a photosynthetic, non nitrogen fixing cyanobacteria Arthrospira maxima (SAE-25780) was investigated for their probable use in synthetic dye decolorization which poses environmental pollution problem in aquatic bodies.

A.

maxima (SAE-25780) showed a constitutive production of laccase which increased up to 80% in the presence of inducer guaiacol.

The optimal condition for laccase was 30 C, 10 mM sucrose as a carbon source, 10 mM sodium nitrate as a nitrogen source, and 2 mM copper as metal activator.

The partially purified laccase showed 84% and 49% decolorization potential for the two anthroquinonic dyes-Reactive Blue 4 and Remazol Brilliant Blue R, respectively (RBBR) within 96 h without any mediator.

Therefore the laccase extracted from A.

maxima (SAE-25780) can be used efficiently in bioremediation of synthetic dyes from paper, pulp and textile industries.