化学试剂2026，Vol.48Issue(4)：34-41,8.DOI:10.13822/j.cnki.hxsj.2026.0012
酒糟中原木质素和纤维素高效水解分离与回收
Efficient Hydrolytic Separation and Recovery of Native Lignin and Cellulose from Distillers'Grains
摘要
Abstract
The high-value utilization of distillers' grains has gradually attracted attention with the advances of green and sustainable development in the liquor industry.In this study,an integrated strategy based on a combination of enzymatic pretreatment and alkaline hydrolysis,was developed for the full-component separation of distillers' grains and the intact recovery of native lignin and cellulose.Initially,amylase and saccharase were used stepwise to remove starch and soluble sugars from the distillers' grains,followed by alkaline hydrolysis under mild conditions to separate lignin and cellulose.The effects to the product,of hydrolysis temperature(60～120℃)and time(48～66 h)were systematically investigated.Efficient separation of lignin and cellulose was achieved under the conditions of 100℃and 0.5 mol/L NaOH for 48 h,the lignin recovery reached 91.4%.FT-IR,NMR,GPC,TGA,and XRD confirmed that the recovered lignin retained its complete structure,exhibited a moderate molecular weight with a narrow distribution(Mw 13 kDa,PDI 1.3),and the cellulose was of high purity and exhibited good crystallinity.SEM observations revealed that the lignin had a uniform spherical morphology and the cellulose fibers showed clear fibrous structures.This method provides a simple and efficient separation pathway for the high-value components of distillers' grains,demonstrating potential for resource utilization.关键词
酒糟/生物质资源化/回收/酶预处理/碱水解/木质素/纤维素Key words
distiller's grains/biomass resource utilization/recycling/enzymatic pretreatment/alkaline hydrolysis/lignin/cellulose分类
化学化工引用本文复制引用
罗洁,安文丽,符志成,邓瑾妮,汪婷,姜艳,陈明军..酒糟中原木质素和纤维素高效水解分离与回收[J].化学试剂,2026,48(4):34-41,8.基金项目
国家自然科学基金面上项目(22475177). （22475177）
