alexa Biological pretreatment of wheat straw by Phanerochaete chrysosporium supplemented with inorganic salts.
Environmental Sciences

Environmental Sciences

Journal of Bioremediation & Biodegradation

Author(s): Zeng J, Singh D, Chen S

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Abstract Inorganic salts and tween 80 are known to induce the lignin degrading peroxidase expression of Phanerochaete chrysosporium in submerged culture. In this study, the wheat straw pretreatment supplemented with inorganic salts (salts group), tween 80 (plus) and no supplementation to the biomass (minus) were examined. Among the solid state fermentation groups, salts group resulted in a substantial degradation of wheat straw within one week, along with the highest lignin loss (25\%) and ∼250\% higher efficiency for the total sugar release through enzymatic hydrolysis. The results were correlated with pyrolysis GC-MS (Py-GC-MS), thermogravimetric (TG)/differential thermogravimetric (DTG) and X-ray diffraction (XRD). The results suggested that the supplementation of inorganic salts in the solid state fermentation of wheat straw significantly enhances the degradation rate of the biomass by P. chrysosporium which can be exploited as an alternative means to existing pretreatment technologies. Copyright © 2010 Elsevier Ltd. All rights reserved. This article was published in Bioresour Technol and referenced in Journal of Bioremediation & Biodegradation

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