Liaoning Key Laboratory of Lignocellulose Chemistry and BioMaterials, Dalian Polytechnic University, Dalian, 116034, China; State Key Laboratory of Catalysis (SKLC), Dalian National Laboratory for Clean Energy (DNL), Dalian, China.
Liaoning Key Laboratory of Lignocellulose Chemistry and BioMaterials, Dalian Polytechnic University, Dalian, 116034, China.
Carbohydr Polym. 2021 Jun 1;261:117884. doi: 10.1016/j.carbpol.2021.117884. Epub 2021 Mar 3.
Due to over-consumption of fossil resources and environmental problems, lignocellulosic biomass as the most abundant and renewable materials is considered as the best candidate to produce biomaterials, biochemicals, and bioenergy, which is of strategic significance and meets the theme of Green Chemistry. Highly efficient and green fractionation of lignocellulose components significantly boosts the high-value utilization of lignocellulose and the biorefinery development. However, heterogeneity of lignocellulosic structure severely limited the lignocellulose fractionation. This paper offers the summary and perspective of the extensive investigation that aims to give insight into the lignocellulose prior-fractionation. Based on the role and structure of lignocellulose component in the plant cell wall, lignocellulose prior-fractionation can be divided into cellulose-first strategy, hemicelluloses-first strategy, and lignin-first strategy, which realizes the selective dissociation and transformation of a component in lignocellulose. Ultimately, the challenges and opportunities of lignocellulose prior-fractionation are proposed on account of the existing problems in the biorefining valorization.
由于化石资源的过度消耗和环境问题，木质纤维素生物质作为最丰富和可再生的材料，被认为是生产生物材料、生物化学物质和生物能源的最佳候选材料，这具有战略意义，符合绿色化学的主题。木质纤维素组分的高效、绿色分离显著促进了木质纤维素的高值利用和生物炼制的发展。然而，木质纤维素结构的异质性严重限制了木质纤维素的分离。本文对广泛的研究进行了总结和展望，旨在深入了解木质纤维素的预分离。基于木质纤维素组分在植物细胞壁中的作用和结构，木质纤维素预分离可分为纤维素优先策略、半纤维素优先策略和木质素优先策略，实现了木质纤维素中某一组分的选择性解离和转化。最后，针对生物炼制增值过程中存在的问题，提出了木质纤维素预分离的挑战和机遇。
