利用愈创木酚基深共晶溶剂实现可持续的生物炼制。
Utilization of guaiacol-based deep eutectic solvent for achieving a sustainable biorefinery.
机构信息
Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Jiangsu Province Key Laboratory of Biomass Energy and Materials, Nanjing 210042, China; Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China; Department of Chemical and Biomolecular Engineering, University of Tennessee Knoxville, Knoxville, TN 37996, USA.
Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Jiangsu Province Key Laboratory of Biomass Energy and Materials, Nanjing 210042, China.
出版信息
Bioresour Technol. 2022 Oct;362:127771. doi: 10.1016/j.biortech.2022.127771. Epub 2022 Aug 11.
This study proposed a renewable deep eutectic solvent (DES) pretreatment using lignin-derived guaiacol as the hydrogen bond donor. The DES showed excellent biomass fractionation efficiency after the incorporation of trace AlCl as the reinforcer, which removed 79.1 % lignin while preserving more than 90 % glucan. The pretreated bamboo exhibited 96.2 % glucan enzymatic hydrolysis yield at only 110 °C. The physicochemical properties of the pretreated solids were comprehensively investigated to explain how the DES fractionation overcame the biomass recalcitrance. The regenerated lignin from the DES pretreatment was also analyzed, which revealed that lignin β-O-4 bond was significantly cleaved. This guaiacol-based DES could greatly contribute to establish a closed-loop biorefinery sequence with high lignin fractionation efficiency and great solvent recyclability.
本研究提出了一种使用木质素衍生的愈创木酚作为氢键供体的可再生深共晶溶剂（DES）预处理方法。在加入痕量 AlCl 作为增强剂后，DES 显示出优异的生物质分馏效率，去除了 79.1%的木质素，同时保留了超过 90%的葡聚糖。预处理后的竹子在 110°C 下的葡聚糖酶水解产率达到 96.2%。全面研究了预处理固体的物理化学性质，以解释 DES 分馏如何克服生物质的抗降解性。还分析了 DES 预处理中再生的木质素，结果表明木质素 β-O-4 键被显著切断。这种基于愈创木酚的 DES 可以极大地促进建立一个具有高木质素分馏效率和高溶剂可回收性的闭环生物炼制序列。
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