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Electron beam irradiation of bamboo chips: degradation of cellulose and hemicelluloses

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Abstract

Electron beam irradiation (EBI) can degrade lignocellulosic materials and thus be used as a pretreatment method for efficient enzymatic hydrolysis. This research is mainly concerned with the degradation of cellulose and hemicelluloses when bamboo chips are exposed to various doses of EBI. The results show that cellulose degradation occurred continuously but without a gradual drop of the crystalline index with irradiation dose ranging from 0 to 50 kGy; meanwhile, no significant changes were observed in the molecular weight of hemicelluloses. An obvious relationship was found between irradiation dose and cellulose degradation, which could be used to control cellulose degradation by adjusting the EBI dose. Furthermore, the difficulty of cellulose depolymerization [G(s)] in bamboo chips by exposure to EBI was calculated as 0.052 µmol/J.

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Acknowledgments

The authors acknowledge support from the Natural Science Foundation of Fujian Province, China (2012J01065), the Forestry Department of Fujian Province, China [2012]2, and the Scientific Research Foundation of the Graduate School of Fujian Agriculture and Forestry University (324-1122yb002).

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Authors and Affiliations

  1. College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, China

    Xiaojuan Ma, Xin Zheng, Mingxin Zhang, Xuefang Yang, Lihui Chen, Liulian Huang & Shilin Cao

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  1. Xiaojuan Ma
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  2. Xin Zheng
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  3. Mingxin Zhang
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  4. Xuefang Yang
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  5. Lihui Chen
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  6. Liulian Huang
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  7. Shilin Cao
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Correspondence to Shilin Cao.

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Ma, X., Zheng, X., Zhang, M. et al. Electron beam irradiation of bamboo chips: degradation of cellulose and hemicelluloses. Cellulose 21, 3865–3870 (2014). https://doi.org/10.1007/s10570-014-0402-4

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