Profiling of the formation of lignin-derived monomers and dimers from Eucalyptus alkali lignin
Profiling of the formation of lignin-derived monomers and dimers from Eucalyptus alkali lignin
复制标题
桉树碱木质素木质素衍生单体和二聚体形成的分析
DOI：
10.1039/d0gc01658f
复制
发表时间：
2020-11
期刊：
影响因子：
9.8
通讯作者：
Lu Fachuang
中科院分区：
文献类型：
--
作者：
Zhao Chengke;Hu Zhenhua;Shi Lanlan;Wang Chen;Yue Fengxia;Li Suxiang;Zhang Han;Lu Fachuang
Lignin is a renewable and the most abundant aromatic source that can be used for extensive chemicals and materials. Although approximately 50 million tons of lignin are produced annually as a by-product of the pulp and paper industry, it is currently underutilized. It is important to know the structural features of technical lignin when considering its application. In this work, we have demonstrated the formation of low-molecular-weight constituents from hardwood (Eucalyptus) lignin, which produces much more low-molecular-weight constituents than softwood (spruce) lignin, after a chemical pulping process, and analyzed the micromolecular compositions in the alkali lignin after fractionation by dichloromethane (DCM) extraction. By applying analytical methods (gel-permeation chromatography, 2D NMR and GC-MS) with the aid of evidence from authenticated compounds, a great treasure trove of lignin-derived phenolic compounds from Eucalyptus alkali lignin were disclosed. Except for some common monomeric products, as many as 15 new lignin-derived monomers and dimers including syringaglycerol, diarylmethane, 1,2-diarylethanes, 1,2-diarylethenes, (arylvinyl ether)-linked arylglycerol dimers and isomeric syringaresinols were identified in the DCM-soluble fraction. Regarding the formation and evolution of the C alpha-condensed beta-aryl ether structure, a novel route that is potentially responsible for the high content of beta-1 diarylethenes and diarylethanes in the lignin low-molecular-weight fraction, in addition to the beta-1 (spirodienone) pathway, was proposed. This work not only provides novel insights into the chemical transformation of S-G lignin during the alkali pulping process, but also discovered lignin-derived phenolic monomers and dimers that can potentially be used as raw materials in the chemical or pharmaceutical industries.
登录
查看更多内容
DOI：
10.1002/anie.201510351
发表时间：
2016-07-11
期刊：
Angewandte Chemie (International ed. in English)
影响因子：
--
作者：
Rinaldi R;Jastrzebski R;Clough MT;Ralph J;Kennema M;Bruijnincx PC;Weckhuysen BM
通讯作者：
Weckhuysen BM
对碱木质素涉及芳基甘油和烯醇醚的形成和转化的结构见解
DOI：
10.1016/j.ijbiomac.2020.02.241
发表时间：
2020
影响因子：
8.2
作者：
Zhao Chengke;Li Suxiang;Zhang Han;Yue Fengxia;Lu Fachuang
通讯作者：
Lu Fachuang
影响因子：
1.1
作者：
G. R. Hoey;D. J. L. Roy
通讯作者：
G. R. Hoey;D. J. L. Roy
影响因子：
9.8
作者：
Shih-Miao Liu;Lalitendu Das;D. Blauch;C. Veronee;Chang Dou;J. Gladden;N. Sun;A. Socha
通讯作者：
Shih-Miao Liu;Lalitendu Das;D. Blauch;C. Veronee;Chang Dou;J. Gladden;N. Sun;A. Socha
影响因子：
5.6
作者：
Vinardell MP;Mitjans M
通讯作者：
Mitjans M