title: The role of pretreatment in improving the enzymatic hydrolysis of lignocellulosic materials.
abstract: Lignocellulosic materials are among the most promising alternative energy resources that can be utilized to produce cellulosic ethanol. However, the physical and chemical structure of lignocellulosic materials forms strong native recalcitrance and results in relatively low yield of ethanol from raw lignocellulosic materials. An appropriate pretreatment method is required to overcome this recalcitrance. For decades various pretreatment processes have been developed to improve the digestibility of lignocellulosic biomass. Each pretreatment process has a different specificity on altering the physical and chemical structure of lignocellulosic materials. In this paper, the chemical structure of lignocellulosic biomass and factors likely affect the digestibility of lignocellulosic materials are discussed, and then an overview about the most important pretreatment processes available are provided. In particular, the combined pretreatment strategies are reviewed for improving the enzymatic hydrolysis of lignocellulose and realizing the comprehensive utilization of lignocellulosic materials.
authors: Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China.
authors: Shaoni
authors: S
authors: Sun
authors: Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China.
authors: Shaolong
authors: S
authors: Sun
authors: Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China.
authors: Xuefei
authors: X
authors: Cao
authors: Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China. Electronic address: rcsun3@bjfu.edu.cn.
authors: Runcang
authors: R
authors: Sun
mesh_terms: D056804:Biofuels; D018533:Biomass; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry*
chemical_list: D056804:Biofuels; C036909:lignocellulose; D008031:Lignin
keywords: Cellulosic ethanol; Digestibility; Enzymatic hydrolysis; Lignocellulose; Pretreatment