木质素影响木质纤维原料酶解的作用机理及其研究进展

Mechanism and Research Progress of Lignin Affecting the Enzymatic Hydrolysis of Lignocellulosic Raw Materials

关键词:  木质素  酶水解  疏水  静电  氢键

Key Words:lignin  enzymatic hydrolysis  hydrophobicity  electrostatic  hydrogen bonding

摘要:作为木质纤维素生物乙醇制备过程中必不可少的步骤，酶水解可对木质纤维素进行高效且经济的转化，也是实现工业化生产木质纤维素生物乙醇的关键步骤。木质素作为木质纤维素主要组分之一，其对酶促反应的作用，在影响木质纤维素酶水解转化的因素中极其重要。目前，木质素对木质纤维素的酶水解主要表现为抑制，体现在空间位阻、非生产性吸附（包括疏水作用、静电作用、氢键作用）以及生成的可溶性酚类化合物的影响3个方面。本文综述了近年来木质素在木质纤维素酶水解转化作用的研究，并对木质纤维素生物乙醇的发展和工业化生产前景做出了展望。

Abstract:Enzymatic hydrolysis is an essential step in the preparation of lignocellulosic bioethanol， and the efficient and economical transformation of raw materials lignocellulose is a key step to achieve industrial production. Lignin is one of the main components of lignocellulose， and its effect on enzymatic reaction is a very important factor in the enzymatic hydrolysis transformation of lignocellulosic materials. At present， lignin mainly inhibites enzymatic hydrolysis of biomass， which was reflected in steric hindrance， non-productive adsorption （hydrophobic interaction， electrostatic interaction， and hydrogen bond interaction）， and the influence of soluble phenolic compounds. In this paper， the recent researches of lignin in the hydrolysis and conversion of lignocellulosic enzymes were summarized， and the development and industrialization of lignocellulosic bioethanol was prospected.