基于硼化学串联糖结晶体系分离高得率高纯度木糖

打开文本图片集

中图分类号：S71 文献标识码：A DOI：10.7525/j.issn.1006-8023.2025.04.005

Abstract： Hemicelulose acid hydrolysates contain diverse sugars，yet existing separation and purification processes remain complex.This study presents a simplifiedand eficient methodfor isolating and extracting crystaline xylose from hemicellulose hydrolysates.Byleveraging thepreferentialselectivityof phenylboronicacid towardxylose，axylose-boro nateester XDE intermediate was formed.Subsequent transesterification with propylene glycol in ethylacetate enabled the precipitation of high-purity crystalline xylose. The process achieved an average xylose yield of 75% and purity up to 99. 8% over five operational cycles.Notably，this green solvent-based tandem system operated at ambient temperature， eliminating industrial-scale procedures including decolorization，desalination，andrecrystalization．Thedeveloped methodology demonstrates eficient xylose extraction with minimized energy consumption and environmentalimpact.

KeyWords：Industrial hydrolysate mixture；tandem sugar crystalization-purification system；high-yield and high-purity xylose;boron chemistry

0 引言

随着化石燃料的枯竭以及全球能源需求的持续增长，探寻可持续的能源替代物已成为迫在眉睫的任务[1]。（剩余13332字）