Biotechnological potential of extracellular peroxidases from streptomyces albus

This widespread use of chlorophenols has resulted in their presence as contaminants in many environments. The aim of the study was to assess the potential of peroxidases from a lignocellulose-degrading actinobacteria, Streptomyces allms for the degradation of chlorinated phenols. Extracellular peroxidases activity, together with endoxylanase activity were detected during the growth of S. a/bus. with maximum extracellular peroxidase activity (using 2,4-dichlorophenol as substrate) recorded after 96 h (0.34 U ml'1 ). To assess the biotechnological potential of the extracellular peroxidase activity, enzyme activity was assessed using a range of chlorinated subSLrates: 4-chlorophenol, 2,4 dichlorophenol, 2,4,6-trichlorophenol and penwchlorophenol. Activity against all four substrates was detected, with activities of 0.30. 0.43, 0.43 and 0. 18 U ml'1 respectively. The results suggest a biotechnological role for the peroxidase from S. a/bus in the degradation of chlorinated compounds.