title: Effect of metal ions and redox mediators on decolorization of synthetic dyes by crude laccase from a novel white rot fungus Peniophora sp. (NFCCI-2131).
abstract: The effect of different metal ions and two redox mediators on laccase activity and laccase-catalyzed decolorization of five synthetic dyes was investigated in vitro using crude laccase from a novel white rot fungus Peniophora sp. (NFCCI-2131). The fungus effectively decolorized crystal violet and brilliant green on malt extract agar medium. Laccase activity was enhanced by metal ions such as Cd(2+), Mn(2+), Ni(2+), Co(2+), Na(+) Ca(2+), and Cu(2+). Among the different dyes tested, highest decolorization of crystal violet (96.30 %) was obtained in the presence of 1 mM ABTS followed by 86.01 % by HBT. The results conspicuously indicated that laccase from Peniophora sp. has the potential for color removal from textile dye effluent even in the presence of toxic metal ions.
authors.affiliation: Department of Environmental Science, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya vihar, Rae bareli Road, Lucknow, Uttar Pradesh, 226025, India.
authors.forename: Shiv
authors.initials: S
authors.lastname: Shankar
authors.lastname: Shikha
authors.forename: Shikha
authors.initials: S
authors.lastname: Nill
mesh_terms: D001487:Basidiomycota / Q000201:enzymology*; D004396:Coloring Agents / Q000737:chemistry*; D000075322:Heavy Metal Poisoning; D007477:Ions / Q000494:pharmacology; D042845:Laccase / Q000737:chemistry / Q000378:metabolism*; D008670:Metals / Q000494:pharmacology; D010084:Oxidation-Reduction; D011041:Poisoning
chemical_list: D004396:Coloring Agents; D007477:Ions; D008670:Metals; D042845:Laccase