Characterization of changes of lignin structure in the processes of cooking with solid alkali and different active oxygen

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	Characterization of changes of lignin structure in the processes of cooking with solid alkali and different active oxygen
	Yang, Qiulin ; Shi, Jianbin ; Lin, Lu ; Peng, Lincai ; Zhuang, Junping ; Lin L(林鹿)
刊名	http://dx.doi.org/10.1016/j.biortech.2012.07.070
	2012-11
关键词	CROP RESIDUES PRETREATMENT BIOMASS NMR ETHANOL BIOFUEL WOOD
英文摘要	Ministry of Science and Technology of China [2010CB732201]; Natural Science Foundation of China [U0733001, 21106121]; Basic Research Foundation for Central Universities from the Ministry of Education [2010121077]; Foundation of Scientific Research Universities from Department of Economy and Commerical of Fujian Province of China [1270-K42004]; The cooking with solid alkali and active oxygen has a high selectivity for delignification. In the present work, the O-2 and H2O2 were separately combined with MgO used in cornstalk cooking for investigating their effects on delignification. After cooking, the lignins in raw material, pulp, and yellow liquor were all characterized by HSQC NMR. The results showed that the syringyl (S/S'/S '') units and beta-O-4' (A/A'/A '') structures had different reactivity in the cooking with MgO and H2O2 due to their different structures on side-chains. Whereas the syringyl (S/S'/S '') units could be completely decomposed when the MgO and O-2 were used, and the beta-O-4' (A/A'/A '') structures could be partly degraded. A novel structure G' unit with a carbonyl group was only generated in the cooking with MgO and O-2. In addition, the H unit, non-phenolic beta-beta' (B) and beta-5' (C) structures were all stable in both of the two cooking processes. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
语种	英语
出版者	BIORESOURCE TECHNOL
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/90247]
专题	能源院－已发表论文
推荐引用方式 GB/T 7714	Yang, Qiulin,Shi, Jianbin,Lin, Lu,et al. Characterization of changes of lignin structure in the processes of cooking with solid alkali and different active oxygen[J]. http://dx.doi.org/10.1016/j.biortech.2012.07.070,2012.
APA	Yang, Qiulin,Shi, Jianbin,Lin, Lu,Peng, Lincai,Zhuang, Junping,&林鹿.(2012).Characterization of changes of lignin structure in the processes of cooking with solid alkali and different active oxygen.http://dx.doi.org/10.1016/j.biortech.2012.07.070.
MLA	Yang, Qiulin,et al."Characterization of changes of lignin structure in the processes of cooking with solid alkali and different active oxygen".http://dx.doi.org/10.1016/j.biortech.2012.07.070 (2012).