半纤维素
木质纤维素生物量
化学
水解
木质素
纤维素
水解物
丁醇
盐酸
色谱法
酶水解
有机化学
化学工程
乙醇
工程类
作者
Ruilin Wu,Chao Xiao,Jianwei Zhu,Mingfu Zu,M Mingwen Tian,Hua Li,Shilin Yu,Haibo Xie
标识
DOI:10.1016/j.indcrop.2023.118014
摘要
The compact dimensional aggregate structure and the complex chemical components of lignocellulose go against its high value utilization. The mixture of dilute hydrochloric acid and n-butanol, which had a characteristic of homogeneous phase at high temperature and phase separation at low temperature, was proposed for lignocellulosic hydrolysis and hydrolysates separation. The results showed that lignocellulose was hydrolyzed under the synergy effect of hydrochloric acid and n-butanol in homogeneous condition, and hemicellulose and lignin hydrolysates were transferred automatically into dilute hydrochloric acid phase and n-butanol phase during the phase separation of the solvent after pretreatment, respectively. N-butanol accelerated lignin hydrolysis and protected β-O-4 linkage within lignin during the pretreatment. Meanwhile, the cellulose within solid phase product from the pretreatment was of high crystallinity, and its glucose yield in enzymatic saccharification at 48 and 72 h were 73.5% and 97.3%, respectively. This study provides a new method for lignocellulose hydrolysis and hydrolysates separation, and lays a theoretical foundation for lignocellulosic utilization of all component.
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