Enzymatic conversion of pretreated lignocellulosic biomass: A review on influence of structural changes of lignin

TY - JOUR

T1 - Enzymatic conversion of pretreated lignocellulosic biomass

T2 - A review on influence of structural changes of lignin

AU - Sheng, Yequan

AU - Lam, Su Shiung

AU - Wu, Yingji

AU - Ge, Shengbo

AU - Wu, Jinglei

AU - Cai, Liping

AU - Huang, Zhenhua

AU - Le, Quyet Van

AU - Sonne, Christian

AU - Xia, Changlei

PY - 2021/3

Y1 - 2021/3

N2 - The demands of energy sustainability drive efforts to bio-chemical conversion of biomass into biofuels through pretreatment, enzymatic hydrolysis, and microbial fermentation. Pretreatment leads to significant structural changes of the complex lignin polymer that affect yield and productivity of the enzymatic conversion of lignocellulosic biomass. Structural changes of lignin after pretreatment include functional groups, inter unit linkages and compositions. These changes influence non-productive adsorption of enzyme on lignin through hydrophobic interaction and electrostatic interaction as well as hydrogen bonding. This paper reviews the relationships between structural changes of lignin and enzymatic hydrolysis of pretreated lignocellulosic biomass. The formation of pseudo-lignin during dilute acid pretreatment is revealed, and their negative effect on enzymatic hydrolysis is discussed.

AB - The demands of energy sustainability drive efforts to bio-chemical conversion of biomass into biofuels through pretreatment, enzymatic hydrolysis, and microbial fermentation. Pretreatment leads to significant structural changes of the complex lignin polymer that affect yield and productivity of the enzymatic conversion of lignocellulosic biomass. Structural changes of lignin after pretreatment include functional groups, inter unit linkages and compositions. These changes influence non-productive adsorption of enzyme on lignin through hydrophobic interaction and electrostatic interaction as well as hydrogen bonding. This paper reviews the relationships between structural changes of lignin and enzymatic hydrolysis of pretreated lignocellulosic biomass. The formation of pseudo-lignin during dilute acid pretreatment is revealed, and their negative effect on enzymatic hydrolysis is discussed.

KW - Enzymatic hydrolysis

KW - Lignin characterization

KW - Lignin structure

KW - Pretreatment

KW - Pseudo-lignin

UR - http://www.scopus.com/inward/record.url?scp=85099192104&partnerID=8YFLogxK

U2 - 10.1016/j.biortech.2020.124631

DO - 10.1016/j.biortech.2020.124631

M3 - Review

C2 - 33454445

AN - SCOPUS:85099192104

SN - 0960-8524

VL - 324

JO - Bioresource Technology

JF - Bioresource Technology

M1 - 124631

ER -