Delignification of Lignocellulosic Biomass and Its Effect on Subsequent Enzymatic Hydrolysis

BioResources

Justin O. Zoppe¹  Heenae Shin²  Sunkyu Park³  Junyeong Park³  Seunghyun Yoo⁴ 

[1] Korea, Republic Of;United States;North Carolina State University;Seoul National University;

关键词: Enzymatic hydrolysis;    Water retention value;    Delignification;   

DOI  :  10.15376/biores.10.2.2732-2743

来源: DOAJ

【 摘 要 】

The effect of delignification on the enzymatic hydrolysis of biomass was investigated to determine how different delignification processes affect enzymatic hydrolysis conversion yields. Oxygen, hydrogen peroxide, and sodium chlorite treatments were performed, and the structural and chemical changes in the biomass were evaluated. Sodium chlorite delignification proved the most effective process to remove lignin in hardwood samples, followed by oxygen delignification. Hydrogen peroxide delignification was not as effective as the other two methods. As for the enzymatic conversion of carbohydrates after delignification processes on hardwood, oxygen and sodium chlorite treatments substantially improved conversion yields as the number of successive treatments was increased, compared to untreated hardwood samples. Changes in α-cellulose after delignification were less substantial than those of hardwood samples, and corresponding conversion yields were also lower. Delignification-induced structural changes in treated substrates might be responsible for the changes in carbohydrate conversion yield observed following subsequent enzymatic hydrolysis.

【 授权许可】

Unknown