title: Effect of steam explosion on biodegradation of lignin in wheat straw.
abstract: The effect of steam explosion pretreatment on biodegradation of lignin in wheat straw was studied in this paper. Through experiments and analysis, 0.8MPa operation pressure and 1:20 wheat straw to water ratio are optimum for destroying lignin and the maximum of lignin loss rate is 19.94%. After steam explosion pretreatment, the wheat straw was retted by Trametes versicolor for 40 days. Biodegradation rate of lignin was tested and the maximum of 55.40% lignin loss rate was found on day 30. During the whole process of both steam explosion pretreatment and biodegradation, 75.34% lignin was degraded, without steam explosion the biodegradation of raw material the degradation rate of lignin was 31.23% only. FT-IR spectroscopy, TGA and SEM were used for further validating the results of biodegradation.
authors.affiliation: College of Engineering, China Agricultural University, 17 Qinghua Donglu, Beijing 100083, China.
authors.forename: Lian-Hui
authors.initials: LH
authors.lastname: Zhang
authors.forename: Dong
authors.initials: D
authors.lastname: Li
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Wang
authors.forename: Ti-Peng
authors.initials: TP
authors.lastname: Wang
authors.forename: Lu
authors.initials: L
authors.lastname: Zhang
authors.forename: Xiao Dong
authors.initials: XD
authors.lastname: Chen
authors.forename: Zhi-Huai
authors.initials: ZH
authors.lastname: Mao
mesh_terms: D001487:Basidiomycota / Q000378:metabolism; D001673:Biodegradation, Environmental; D008031:Lignin / Q000378:metabolism*; D011312:Pressure; D017550:Spectroscopy, Fourier Transform Infrared; D013227:Steam; D013696:Temperature; D014908:Triticum / Q000378:metabolism*
chemical_list: D013227:Steam; C036909:lignocellulose; D008031:Lignin