Analysis of degradation products and structural characterization of giant reed and Chinese silvergrass pretreated by Co-60-gamma irradiation

doi:10.1016/j.indcrop.2016.01.024

	Analysis of degradation products and structural characterization of giant reed and Chinese silvergrass pretreated by Co-60-gamma irradiation
	Li, Qing-ming 1,2; Li, Xia-jie 1; Jiang, Yi-le 1; Xiong, Xing-yao 4; Hu, Qiu-long 2; Tan, Xing-he 1; Wang, Ke-qin 2; Su, Xiao-jun 2,3
刊名	INDUSTRIAL CROPS AND PRODUCTS
	2016
卷号	83 页码:307-315
关键词	Pretreatment Gamma irradiation Inhibitor Ethanol
ISSN号	0926-6690
DOI	10.1016/j.indcrop.2016.01.024
通讯作者	Li, Qing-ming
英文摘要	Radiation pretreatment of lignocellulosics has been widely applied for the breakdown of the stubborn cellulose structure to enable the cellulose to be more accessible to cellulolytic enzymes. However, the effects of gamma irradiation on the lignocellulosics structure changes and the composition of pretreatment degradation products are not well understood. In this study, the influences of irradiation dose on the microstructure and irradiated-degradation components of cellulose under Co-6 gamma-irradiation (0-1200 kGy) was comprehensively investigated using giant reed and Chinese silvergrass as model substrate. The microstructure of biomass was examined with Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). Additionally, composition determination and degradation products were analyzed. FT-IR analysis show that irradiation destroyed the glycosidic bond and inter- and intramolecular hydrogen bond of cellulose. XRD and SEM analyses confirm that irradiation could damage the crystalline microstructure and surface morphology of lignocellulosics. Ion chromatography analysis demonstrates that there exist fermentation sugars such as glucose, xylose, arabinose, galactose and cellobiose. Moreover, some potential inhibitors, such as glucuronic acid, galacturonic acid, methanoic acid, acetic acid, furfuraldehyde and p-coumaric acid, were detected in the irradiation-derived degradation products. Irradiation dose exhibited obvious influences on the production of these products. These investigations would be helpful for further understanding the applications and fundamentals of gamma irradiation pretreatment for bioethanol production from lignocellulosics. (c) 2016 Elsevier B.V. All rights reserved.
学科主题	Agricultural Engineering ; Agronomy
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000370894000038
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/100824]
专题	蔬菜花卉研究所_马铃薯研究室
作者单位	1.Hunan Agr Univ, Coll Food Sci & Technol, Changsha 410128, Hunan, Peoples R China 2.Hunan Agr Univ, Hunan Prov Key Lab Crop Germplasm Innovat & Utili, Changsha 410128, Hunan, Peoples R China 3.Hunan Agr Univ, Hunan Collaborat Innovat Utilizat Bot Funct Ingre, Changsha 410128, Hunan, Peoples R China 4.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Li, Qing-ming,Li, Xia-jie,Jiang, Yi-le,et al. Analysis of degradation products and structural characterization of giant reed and Chinese silvergrass pretreated by Co-60-gamma irradiation[J]. INDUSTRIAL CROPS AND PRODUCTS,2016,83:307-315.
APA	Li, Qing-ming.,Li, Xia-jie.,Jiang, Yi-le.,Xiong, Xing-yao.,Hu, Qiu-long.,...&Su, Xiao-jun.(2016).Analysis of degradation products and structural characterization of giant reed and Chinese silvergrass pretreated by Co-60-gamma irradiation.INDUSTRIAL CROPS AND PRODUCTS,83,307-315.
MLA	Li, Qing-ming,et al."Analysis of degradation products and structural characterization of giant reed and Chinese silvergrass pretreated by Co-60-gamma irradiation".INDUSTRIAL CROPS AND PRODUCTS 83(2016):307-315.