Received: 29-12-2016
Accepted: 12-11-2018
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Production and Characterization of Lignin Peroxidase from White Rot Fungal Strain Tl4
Keywords
Lignin peroxidase (LiP), white rot fungus, characterization, thermal stability, pH stability
Abstract
Lignin is a component of plant cell wall. The degradation of lignin remains a challenge to date due to its stability. Lignin peroxidase (LiP) from white rot fungi was known as a highly effective oxidase enzyme for lignin degradation. In this study, extracellular LiP obtained from strain TL4 was precipitated by (NH4)2SO4and ethanol 96% for obtaining technical enzyme and then characterized for optimal temperature and pH and thermal and pH stability. Results indicated that the optimal temperature and pH of LiP were 30C and 4.0, respectively. This enzyme was stable between 20 and 30C for 2 hours (relative activities remain 94.17% and 89.10%, respectively) and pH from 2.0 to 4.0 for 3 hours (relative activities remain 78.97% and 97.87%), respectively. The LiP from strain TL4 showed potential application in environmental treatment and pre-treatment of cropby-products.
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