Enhanced enzymatic hydrolysis of poplar cellulosic residue fractionated by a magnetic carbon-based solid-acid catalyst in the gamma-valerolactone-water system

doi:10.1016/j.indcrop.2021.114397

GIEC OpenIR

	Enhanced enzymatic hydrolysis of poplar cellulosic residue fractionated by a magnetic carbon-based solid-acid catalyst in the gamma-valerolactone-water system
	Wang, Qiong1 ; Liu, Yunyun2 ; Zhang, Yi 1,2; Chen, Yang 1,3; Feng, Qifa 1,4; Wang, Wen 1; Liang, Cuiyi1 ; Hu, Yunzi 1; Qi, Wei1
	2022-02-01
发表期刊	INDUSTRIAL CROPS AND PRODUCTS
ISSN	0926-6690
卷号	176 页码:9
通讯作者	Qi, Wei(qiwei@ms.giec.ac.cn)
摘要	The conventional pretreatment method of poplar comprises multiple steps, including different procedures for fractionating hemicellulose and lignin separately. In our study, hemicellulose and lignin were removed simultaneously by a one-step method. In the gamma-valerolactone (GVL)-water environment, the cellulose retention, hemicellulose removal, and lignin removal rates of 84.94%, 89.08%, and 72.28%, respectively, were achieved over a magnetic carbon-based solid acid (MMCSA) catalyst, under best conditions (160 degrees C, 30 min, 2 g of poplar, 2 g of MMCSA, 35 mL of GVL, and 15 mL of water). The pretreatment of fresh poplar in the reused MMCSA-GVL-water environment showed similar fractionation results as the first time. Scanning electron microscopy characterization of the cellulosic residue revealed the presence of noticeable structural fragmentation. Brunauer-Emmett-Teller characterization showed that the total pore volume of the residue was 2.13 times that of the raw material. The above features of the residue confirmed the high enzymatic hydrolysis potential of the pretreated residue. The enzymatic hydrolysis efficiency of the poplar residue was 67% at a cellulase loading of 20 FPU/g cellulose in dry matter, and it increased to 77.02% at 40 FPU/g cellulose in dry matter. Interestingly, the addition of Tween 80 did not improve the enzymatic hydrolysis efficiency at high cellulase loadings (30 and 40 FPU/g cellulose in dry matter) compared to the case at low cellulase loadings. The relative mechanisms were also analyzed. In this study, a one-step pretreatment method comprising the MMCSA-GVL system for the catalytic depolymerization of poplar wood was developed. The system was verified to be very effective for the subsequent enzymatic hydrolysis of the residues.
关键词	Poplar Magnetic carbon-based solid acid One-step pretreatment Enzymatic hydrolysis Reducing sugars
DOI	10.1016/j.indcrop.2021.114397
关键词[WOS]	PRETREATMENT ; LIGNIN ; SACCHARIFICATION ; CRYSTALLINITY ; XYLOSE
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2019YFB1503801] ; National Key Research and Development Program of China[2019YFB1503802] ; National Natural Science Foundation of China[51976224] ; National Natural Science Foundation of China[52006227] ; Key Fundamental Research Project of Guangdong-Guangxi Joint Funding[2020B151 5420005] ; Youth Innovation Promotion Association, CAS[2021351] ; Guangdong Basic and Applied Basic Research Foundation[2020A1515011012]
WOS研究方向	Agriculture
项目资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Key Fundamental Research Project of Guangdong-Guangxi Joint Funding ; Youth Innovation Promotion Association, CAS ; Guangdong Basic and Applied Basic Research Foundation
WOS类目	Agricultural Engineering ; Agronomy
WOS记录号	WOS:000736966500004
出版者	ELSEVIER
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/35581
专题	中国科学院广州能源研究所
通讯作者	Qi, Wei
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Peoples R China 2.Shaanxi Univ Sci & Technol, Coll Mech & Elect Engn, Xian 710021, Peoples R China 3.Sichuan Agr Univ, Environm Coll, Inst Ecol & Environm Sci, Chengdu 611130, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Wang, Qiong,Liu, Yunyun,Zhang, Yi,et al. Enhanced enzymatic hydrolysis of poplar cellulosic residue fractionated by a magnetic carbon-based solid-acid catalyst in the gamma-valerolactone-water system[J]. INDUSTRIAL CROPS AND PRODUCTS,2022,176:9.
APA	Wang, Qiong.,Liu, Yunyun.,Zhang, Yi.,Chen, Yang.,Feng, Qifa.,...&Qi, Wei.(2022).Enhanced enzymatic hydrolysis of poplar cellulosic residue fractionated by a magnetic carbon-based solid-acid catalyst in the gamma-valerolactone-water system.INDUSTRIAL CROPS AND PRODUCTS,176,9.
MLA	Wang, Qiong,et al."Enhanced enzymatic hydrolysis of poplar cellulosic residue fractionated by a magnetic carbon-based solid-acid catalyst in the gamma-valerolactone-water system".INDUSTRIAL CROPS AND PRODUCTS 176(2022):9.