An efficient magnetic carbon-based solid acid treatment for corncob saccharification with high selectivity for xylose and enhanced enzymatic digestibility

doi:10.1039/c8gc02854k

	An efficient magnetic carbon-based solid acid treatment for corncob saccharification with high selectivity for xylose and enhanced enzymatic digestibility
	Qi, Wei 2; Liu, Guifeng 1,2; He, Chao 2; Liu, Shuna 2; Lu, Si 2,3; Yue, Jun 4; Wang, Qiong 2; Wang, Zhongming 2; Yuan, Zhenhong 2,5; Hu, Jianhua 6
刊名	GREEN CHEMISTRY
	2019-03-21
卷号	21 期号:6 页码:1292-1304
ISSN号	1463-9262
DOI	10.1039/c8gc02854k
通讯作者	Qi, Wei(qiwei@ms.giec.ac.cn) ; Wang, Qiong(wangqiong@ms.giec.ac.cn)
英文摘要	An effective method for corncob saccharification was investigated over a magnetic carbon-based solid acid (MMCSA) catalyst in the aqueous phase. MMCSA was synthesized through a simple and inexpensive impregnation-carbonization-sulfonation process. Under the optimal reaction conditions (150 degrees C, 2 h, 0.5 g corncob, 0.5 g catalyst and 50 ml deionized water), 74.9% of xylose yield was directly obtained from corncob, with 91.7% cellulose retention in the residue. After the reaction, the MMCSA was easily separated from the residue using an external magnet and reused 4 times, showing its high stability and catalytic activity. The enzymatic digestibility of the pretreated residue reached 95.2%, with a total sugar yield of 90.4%. The morphological and structural properties of the natural and treated corncobs were analyzed primarily through 3D X-ray microscopy to characterize the cell wall thickness, porosity, and pore surface area distribution. The increase of macropores (pore surface areas >200 m(2)) was beneficial for the accessibility of cellulose to cellulosic enzymes, so the enzymatic digestibility was enhanced immediately. Compared with other traditional hydrolysis methods, this two-step hydrolysis approach represents an environmentally friendly and sustainable saccharification of lignocellulose to produce xylose and glucose while achieving the same level of reaction efficiency.
资助项目	National Natural Science Foundation of China[51676193] ; National Natural Science Foundation of China[51506207] ; National Natural Science Foundation of China[51561145015] ; Youth Innovation Promotion Association, CAS[2017401] ; Municipal Science and Technology Program of Guangzhou[201804010187] ; Guangdong Key Laboratory of New and Renewable Energy Research and Development[Y709ji1001] ; Netherlands Organisation for Scientific Research[040.21.006]
WOS关键词	LIGNOCELLULOSIC BIOMASS ; PRETREATMENT METHODS ; SUGARCANE BAGASSE ; HYDROLYSIS ; CELLULOSE ; HEMICELLULOSE ; FRUCTOSE ; CATALYST ; GLUCOSE ; ESTERIFICATION
WOS研究方向	Chemistry ; Science & Technology - Other Topics
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000462636800010
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Municipal Science and Technology Program of Guangzhou ; Guangdong Key Laboratory of New and Renewable Energy Research and Development ; Netherlands Organisation for Scientific Research
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/24725]
专题	中国科学院广州能源研究所
通讯作者	Qi, Wei; Wang, Qiong
作者单位	1.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangdong Prov Key Lab New & Renewable Energy Res, 2 Nengyuan Rd, Guangzhou 510640, Guangdong, Peoples R China 3.Changsha Univ Sci & Technol, Changsha 410004, Hunan, Peoples R China 4.Univ Groningen, Engn & Technol Inst Groningen, Dept Chem Engn, NL-9747 AG Groningen, Netherlands 5.Collaborat Innovat Ctr Biomass Energy, 63 Nongye Rd, Zhenghou 450002, Peoples R China 6.Guangdong Inst Anal, Guangdong Prov Key Lab Emergency Test Dangerous C, Guangzhou 510070, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Qi, Wei,Liu, Guifeng,He, Chao,et al. An efficient magnetic carbon-based solid acid treatment for corncob saccharification with high selectivity for xylose and enhanced enzymatic digestibility[J]. GREEN CHEMISTRY,2019,21(6):1292-1304.
APA	Qi, Wei.,Liu, Guifeng.,He, Chao.,Liu, Shuna.,Lu, Si.,...&Hu, Jianhua.(2019).An efficient magnetic carbon-based solid acid treatment for corncob saccharification with high selectivity for xylose and enhanced enzymatic digestibility.GREEN CHEMISTRY,21(6),1292-1304.
MLA	Qi, Wei,et al."An efficient magnetic carbon-based solid acid treatment for corncob saccharification with high selectivity for xylose and enhanced enzymatic digestibility".GREEN CHEMISTRY 21.6(2019):1292-1304.