Abstract
Nanobiocatalysis has received growing attention for use in commercial applications. We investigated the efficiency, stability, and reusability of laccase-poly(lactic-co-glycolic acid) (PLGA) nanofiber for diclofenac transformation. NH stretching vibrations (3400–3500cm−1 and 1560cm−1) in FT-IR spectra confirmed immobilization of laccase on PLGA nanofibers. The relative activity of immobilized laccase was 82% that of free laccase. Immobilized laccase had better storage, pH, and thermal stability than free laccase. The immobilized laccase produced complete diclofenac transformation in three reuse cycles, which was extended to 6 cycles in the presence of syringaldehyde. Results suggest that laccase-PLGA nanofiber may be useful for removing diclofenac from aqueous sources and has potential for other commercial applications.
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