论文部分内容阅读
农林生物质可再生资源的高值转化利用已成为许多国家的重要发展战略和科学研究的热点。目前农林生物质利用技术已经取得了一定的进步,但总体上其转化成本仍然较高,实现木质纤维大规模生产燃料、生物基化学品和材料仍然困难。木质纤维细胞壁的复杂结构及组分分布不均一性是农林生物质难以高值利用的根本原因,其中细胞壁主要化学组分的微观分布及其在生物质转化过程中的降解机理阐释是木质纤维高效利用研究领域亟须解决的瓶颈问题。笔者系统阐明了农林生物质细胞壁超微结构及其主要组分在细胞壁各形态区的区域化学分布特点,并综述了两者在预处理过程中的变化及预处理破除细胞壁顽抗性的机理,为农林生物质进一步高值转化为燃料、化学品等大规模工业化生产提供重要的理论依据。
The high value conversion and utilization of renewable resources in agriculture, forestry, and biomass have become important development strategies and scientific research hotspots in many countries. At present, some progress has been made in the utilization of agroforestry biomass, but in general the conversion costs are still high, and it is still difficult to realize large-scale production of fuels, bio-based chemicals and materials for lignocellulosics. The complex structure of lignocellulosic cell wall and the heterogeneity of the distribution of components are the fundamental reasons for the high utilization of biomass in agriculture and forestry. The microscopic distribution of the main chemical components in the cell wall and the degradation mechanism in the conversion of biomass are explained by the high efficiency of lignocellulose Make use of the bottlenecks that need to be addressed in the research field. The author systematically elucidated the regional chemical distribution characteristics of the cell wall ultrastructure and the main components of the biomass in agriculture, forestry and forestry, and summarized the changes of the two in the pretreatment process and the mechanism of pretreatment to break the recalcitrance of the cell wall. Agriculture and forestry biomass further into high-value fuel, chemicals and other large-scale industrial production provides an important theoretical basis.