Radiation-Induced Structural Changes of Miscanthus Biomass

文献类型： 外文期刊

第一作者： Su, Xiao-Jun

作者： Su, Xiao-Jun;Zhang, Chun-Yan;Li, Wen-Jia;Wang, Feng;Li, Qing-Ming;Su, Xiao-Jun;Li, Qing-Ming;Wang, Ke-Qin;Liu, Yun;Liu, Yun;Liu, Yun;Liu, Yun

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关键词： Miscanthus biomass; irradiation pretreatment; recalcitrant; structural properties; enzymatic hydrolysis

期刊名称：APPLIED SCIENCES-BASEL （ 影响因子：2.679； 五年影响因子：2.736 ）

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年卷期： 2020 年 10 卷 3 期

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收录情况： SCI

摘要： fficient pretreatment is a prerequisite for lignocellulosic biomass biorefinery due to the structure of lignocellulose. This study is a first-time investigation into the structural changes of Miscanthus biomass treated with Co-60 gamma-ray irradiation in different doses up to 1200 kGy. The structural properties of the treated sample have been systematically characterized by FTIR, thermogravimetric analysis (TGA), XRD, gel permeation chromatography (GPC), a laser particle size analyzer, SEM, an atomic force microscope (AFM), and NMR. The results show that irradiation treatment can partially destroy the intra- or inter-molecular hydrogen bonds of biomass. Irradiation treatment can also reduce particle size, narrow the distribution range, as well as increase the specific surface area of biomasses. Noticeably, the TGA stability of the treated biomass decreases with increasing absorbed doses. To respond to these structural changes, the treated biomass can be easily hydrolyzed by cellulases with a high yield of reducing sugars (557.58 mg/g biomass), much higher than that of the untreated sample. We conclude that irradiation treatment can damage biomass structure, a promising strategy for biomass biorefinery in the future.

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