Ionic polymer-coated laccase with high activity and enhanced stability: application in the decolourisation of water containing AO7.

ABSTRACT: Eliminating dyes in environmental water purification remains a formidable challenge. Laccase is a unique, environmentally friendly and efficient biocatalyst that can degrade pollutants. However, the use of laccase for the degradation of pollutants is considerably limited by its susceptibility to environmental changes and its poor reusability. We fabricated a novel biocatalyst (LacPG) by coating polyethylenimine onto the native laccase (Lac) followed by crosslinking with glutaraldehyde. The stability of the resulting LacPG was highly enhanced against pH variations, thermal treatments and provided better long-term storage with a negligible loss in enzymatic activity. Compared to Lac, LacPG exhibited significantly higher decolourisation efficiency in the degradation of a representative azo dy

SUBMITTER: Zhang X 

PROVIDER: S-EPMC4317704 | biostudies-literature | 2015 Feb

REPOSITORIES: biostudies-literature