预处理对木质纤维素生物质细胞壁超微结构的影响

Effect of pretreatment on topochemical and ultrastructural changes of lignocellulose plant cell walls: a review

摘要:

预处理是提高木质纤维素生物质向生物燃料转化的有效途径，但生物质的天然抗降解屏障严重阻碍了这一转化的进行，因此全面了解预处理过程中植物细胞壁的微观结构及区域化学变化是实现农林生物质高效转化的基础。本文总结了多种预处理方法对植物细胞壁超微结构影响的研究进展，对生物质科学研究可能有一定的促进和指导作用。

Abstract:

Deconstruction of lignocellulosic plant cell walls to fermentable sugars by biochemical means is impeded by several poorly understood ultrastructural and chemical barriers. Pretreatment is an essential step by altering the morphological and compositional characteristics of biomass to enhance the sugar release during enzymatic hydrolysis. Therefore, getting insight into this field is necessary to improve the conversion of biomass into biofuels. In this review, we highlight our recent understanding on the impact of various promising pretreatments on biomass, with emphasis on the topochemical and ultrastructural changes of plant cell walls that are related to the reduction of recalcitrance and the consequence of saccharification. It will lend support to the scientific research and development with respect to biomass conversion.