Comparison of different alkali-based pretreatments of corn stover for improving enzymatic saccharification

doi:10.1016/j.biortech.2012.08.095

QIBEBT-IR > 绿色化学催化研究组

	Comparison of different alkali-based pretreatments of corn stover for improving enzymatic saccharification
	Li, Qiang 1,2; Gao, Yang 2,3; Wang, Haisong1 ; Li, Bin1 ; Liu, Chao1 ; Yu, Guang1 ; Mu, Xindong 1
	2012-12-01
发表期刊	BIORESOURCE TECHNOLOGY
卷号	125 期号:1 页码:193-199
摘要	Corn stover was treated with NaOH, NaOH+anthraquinone (AQ), NaOH+Na(2)SO(3) (alkaline), NaOH+Na(2)SO(3) (neutral), and NaOH+Na(2)S, respectively. The treated corn stover was subjected to hydrolysis with cellulase (20 FPU/g dry biomass) and β-glucosidase (10IU/g dry biomass). Compared with other pretreatment methods, alkaline sodium sulfite pretreatment (ASSP) at a relatively low temperature of 140°C provided for the best lignin removal of about 92%. After ASSP with 10wt.% of the total alkali charge (Na(2)SO(3):NaOH=1:1) at 140°C for 30min and subsequent enzymatic hydrolysis, a total sugar yield of 78.2% was obtained on the basis of the amount of glucose and xylose released from raw corn stover. This yield was 24.0% higher than that achieved with NaOH only under the same conditions. Therefore, the supplement of Na(2)SO(3) in alkali pretreatment can facilitate delignification and significantly improve the enzymatic saccharification. ; Corn stover was treated with NaOH, NaOH + anthraquinone (AQ), NaOH + Na2SO3 (alkaline), NaOH + Na2SO3 (neutral), and NaOH + Na2S, respectively. The treated corn stover was subjected to hydrolysis with cellulase (20 FPU/g dry biomass) and beta-glucosidase (10 IU/g dry biomass). Compared with other pretreatment methods, alkaline sodium sulfite pretreatment (ASSP) at a relatively low temperature of 140 degrees C provided for the best lignin removal of about 92%. After ASSP with 10 wt.% of the total alkali charge (Na2SO3:NaOH = 1:1) at 140 degrees C for 30 min and subsequent enzymatic hydrolysis, a total sugar yield of 78.2% was obtained on the basis of the amount of glucose and xylose released from raw corn stover. This yield was 24.0% higher than that achieved with NaOH only under the same conditions. Therefore, the supplement of Na2SO3 in alkali pretreatment can facilitate delignification and significantly improve the enzymatic saccharification. (C) 2012 Elsevier Ltd. All rights reserved.
文章类型	Article
关键词	Corn Stover Chemical Pretreatment Enzymatic Hydrolysis Lignin Removal Total Sugar Yields
学科领域	绿色化学催化
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Technology
DOI	10.1016/j.biortech.2012.08.095
关键词[WOS]	ETHANOL-PRODUCTION ; WHEAT-STRAW ; LIGNOCELLULOSIC BIOMASS ; BIOGAS PRODUCTION ; SUGAR PRODUCTION ; LIGNIN REMOVAL ; HYDROLYSIS ; TECHNOLOGIES ; DIGESTIBILITY ; BIOETHANOL
收录类别	SCI
语种	英语
WOS研究方向	Agriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS类目	Agricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS记录号	WOS:000312759700029
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/1403
专题	绿色化学催化研究组
作者单位	1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Shandong, Peoples R China 2.Shandong Polytech Univ, Minist Educ, Key Lab Paper Sci & Technol, Jinan 250353, Shandong, Peoples R China 3.Huatai Grp Co Ltd, Guangrao 257335, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Li, Qiang,Gao, Yang,Wang, Haisong,et al. Comparison of different alkali-based pretreatments of corn stover for improving enzymatic saccharification[J]. BIORESOURCE TECHNOLOGY,2012,125(1):193-199.
APA	Li, Qiang.,Gao, Yang.,Wang, Haisong.,Li, Bin.,Liu, Chao.,...&Mu, Xindong.(2012).Comparison of different alkali-based pretreatments of corn stover for improving enzymatic saccharification.BIORESOURCE TECHNOLOGY,125(1),193-199.
MLA	Li, Qiang,et al."Comparison of different alkali-based pretreatments of corn stover for improving enzymatic saccharification".BIORESOURCE TECHNOLOGY 125.1(2012):193-199.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Comparison of differ（1050KB）			开放获取	CC BY-NC-SA	浏览下载