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- W2800875894 abstract "In this study, enhancement of biodegradation and detoxification of recalcitrant anthraquinone dye was achieved by laccase from an electron beam irradiated (EBR) endophytic fungus without mediators. The partially purified laccase enzyme (160.8 ± 1.15 U mg−1) from 0.2 kGy irradiated endophytic fungus Phomopsis sp. catalyzed more than 85% of Remazol Brilliant Blue R (RBBR) (50 mg l−1) degradation into non-toxic molecules within 5 min. Laccase enzyme production increased to 1.6 fold (27.7 ± 1.06 U mg−1) due to electron beam radiation (0.2 kGy) of Phomopsis sp. compared to the non-irradiated fungus (17.28 ± 1.09 U mg−1). Laccase enzyme from electron beam irradiated fungus exhibited extreme tolerance for the metals Zn2+, Cu2+, Cr2+ and Ca2+ up to 10 mM concentration. The kinetic parameters Vmax and Km for enzymatic decolorization (0.2 kGy EBR) were estimated by Lineweaver-Burk plot and were found to be more potent than the laccase from non-irradiated fungus. The laccase enzyme retained activity in broad range of temperature (25–45 °C) and pH (4–8). The COD of the original dye was reduced to 60% after biodegradation by the irradiated fungus. The toxicity studies revealed that the degraded dye was non-toxic on plants and microbial growth. The data from LC-MS analysis clearly indicates partial degradation of dye into non-toxic molecules by laccase (0.2 kGy) following oxidation, hydroxylation, deamination and ring cleavage." @default.
- W2800875894 created "2018-05-17" @default.
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- W2800875894 date "2018-08-01" @default.
- W2800875894 modified "2023-10-15" @default.
- W2800875894 title "Enhanced biodegradation and kinetics of anthraquinone dye by laccase from an electron beam irradiated endophytic fungus" @default.
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- W2800875894 doi "https://doi.org/10.1016/j.ibiod.2018.04.012" @default.
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