title: Comparative studies on thermochemical characterization of corn stover pretreated by white-rot and brown-rot fungi.
abstract: The effects of white-rot and brown-rot fungal pretreatment on the chemical composition and thermochemical conversion of corn stover were investigated. Fungus-pretreated corn stover was analyzed by Fourier transform infrared spectroscopy and X-ray diffraction analysis to characterize the changes in chemical composition. Differences in thermochemical conversion of corn stover after fungal pretreatment were investigated using thermogravimetric and pyrolysis analysis. The results indicated that the white-rot fungus Irpex lacteus CD2 has great lignin-degrading ability, whereas the brown-rot fungus Fomitopsis sp. IMER2 preferentially degrades the amorphous regions of the cellulose. The biopretreatment favors thermal decomposition of corn stover. The weight loss of IMER2-treated acid detergent fiber became greater, and the oil yield increased from 32.7 to 50.8%. After CD2 biopretreatment, 58% weight loss of acid detergent lignin was achieved and the oil yield increased from 16.8 to 26.8%.
authors.affiliation: Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
authors.forename: Yelin
authors.initials: Y
authors.lastname: Zeng
authors.forename: Xuewei
authors.initials: X
authors.lastname: Yang
authors.forename: Hongbo
authors.initials: H
authors.lastname: Yu
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Zhang
authors.forename: Fuying
authors.initials: F
authors.lastname: Ma
mesh_terms: D056804:Biofuels; D055453:Coriolaceae / Q000378:metabolism*; D006358:Hot Temperature; D017705:Lignans / Q000032:analysis; D008031:Lignin / Q000032:analysis; D020072:Polyporales / Q000378:metabolism*; D011134:Polysaccharides / Q000032:analysis; D012639:Seeds / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D003313:Zea mays / Q000737:chemistry*
chemical_list: D056804:Biofuels; D017705:Lignans; D011134:Polysaccharides; C036909:lignocellulose; C007916:hemicellulose; D008031:Lignin