Figure 1: Reusability of I-PGP for oxidation of phenol and α-naphthol. Phenol (5 mM, 50) and α-Naphthol polluted water (0.5 mM, 50 mL) was treated with I-PGP (50 U) for 2 h at 40°C. After reaction, immobilized enzyme was collected by centrifugation at 3000 g and stored in assay buffer overnight at 4°C. Similar experiment was repeated 10 times with fresh batch of phenol and α-naphthol polluted water.