实现杨树的充分利用:了解通过柠檬酸缓冲液/疏水性有机溶剂双相预处理共生木寡糖、木质素和葡萄糖的情况

IF 7.3 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Hong Liao, Peiyao Wen, Baojun Feng, Shiqi Wang, Junhua Zhang
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引用次数: 0

摘要

双相预处理结合了水和不相溶的有机溶胶,是生物质中半纤维素、木质素和纤维素一步分馏的有效方法。这项研究评估了使用各种有机溶胶(丁醇、戊醇、2-MeTHF 和 MIBK)双相体系从杨木中分离木质素的同时生产木寡糖(XOS)的情况。与柠檬酸和有机溶胶组成的双相体系相比,柠檬酸缓冲液/有机溶胶预处理更有利于 XOS 的生产。在不同的柠檬酸缓冲液/有机溶剂体系中,柠檬酸缓冲液/戊醇预处理表现出更优越的性能,在优化条件下(pH 2.7、180 °C、40 分钟和 60% v/v),XOS 收率高达 40.5%,木质素去除率为 76.0%,同时保留了残余杨木中 91.6% 的纤维素。随后对处理后的残留物进行酶水解,葡萄糖转化率高达 90.3%,显著提高了杨树生物质的生物转化效率。此外,回收的木质素保留了与原生木质素相当的结构完整性,并显示出较高的酚羟含量,这标志着它是一种可用于多种应用的宝贵原料。这项研究强调了新型柠檬酸缓冲液/戊醇双相预处理在有效分馏生物质方面的前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Toward Full Poplar Utilization: Understanding of Coproducing Xylo-Oligosaccharides, Lignin, and Glucose through Citrate Buffer/Hydrophobic Organosols Biphasic Pretreatment

Toward Full Poplar Utilization: Understanding of Coproducing Xylo-Oligosaccharides, Lignin, and Glucose through Citrate Buffer/Hydrophobic Organosols Biphasic Pretreatment
Biphasic pretreatment, incorporating water and immiscible organosol, presents a promising approach of one-step fractionation of hemicellulose, lignin, and cellulose in biomass. This work evaluated the simultaneous xylo-oligosaccharide (XOS) production alongside lignin isolation from poplar using various organosol (butanol, pentanol, 2-MeTHF, and MIBK) biphasic systems. The citrate buffer/organosol pretreatment was more favorable for XOS production than the biphasic system consisting of citric acid and organosol. Among the different citrate buffer/organosol systems, the citrate buffer/pentanol pretreatment demonstrated superior performance, achieving an extraordinary XOS yield of 40.5% and a lignin removal efficiency of 76.0% under optimized conditions (pH 2.7, 180 °C, 40 min, and 60% v/v), while preserving 91.6% of cellulose in residual poplar. The subsequent enzymatic hydrolysis of the treated residue resulted in a remarkable glucose conversion rate of 90.3%, significantly enhancing the bioconversion efficiency of poplar biomass. Furthermore, the recovered lignin retained structural integrity comparable to that of native lignin and exhibited high phenolic hydroxyl content, marking it as a valuable raw material for diverse applications. This study underscored the promise of a novel citrate buffer/pentanol biphasic pretreatment for the effective fractionation of biomass.
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来源期刊
ACS Sustainable Chemistry & Engineering
ACS Sustainable Chemistry & Engineering CHEMISTRY, MULTIDISCIPLINARY-ENGINEERING, CHEMICAL
CiteScore
13.80
自引率
4.80%
发文量
1470
审稿时长
1.7 months
期刊介绍: ACS Sustainable Chemistry & Engineering is a prestigious weekly peer-reviewed scientific journal published by the American Chemical Society. Dedicated to advancing the principles of green chemistry and green engineering, it covers a wide array of research topics including green chemistry, green engineering, biomass, alternative energy, and life cycle assessment. The journal welcomes submissions in various formats, including Letters, Articles, Features, and Perspectives (Reviews), that address the challenges of sustainability in the chemical enterprise and contribute to the advancement of sustainable practices. Join us in shaping the future of sustainable chemistry and engineering.
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