Enhanced bioethanol production from sugarcane bagasse: combination of liquid hot water and deep eutectic solvent pretreatment for optimized enzymatic saccharification

IF 4.3 3区工程技术 Q2 ENGINEERING, CHEMICAL Frontiers of Chemical Science and Engineering Pub Date : 2024-06-04 DOI:10.1007/s11705-024-2438-9

Xiaoling Xian, Biying Li, Shiyong Feng, Jiale Huang, Xinyuan Fu, Ting Wu, Xiaoqing Lin

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Abstract

In the present study, a sustainable pretreatment methodology combining liquid hot water and deep eutectic solvent is proposed for the efficient fractionation of hemicellulose, cellulose, and lignin from sugarcane bagasse, thereby facilitating the comprehensive utilization of both C5 and C6 sugars. The application of this combined pretreatment strategy to sugarcane bagasse led to notable enhancements in enzymatic saccharification and subsequent fermentation. Experiment results demonstrate that liquid hot water-deep eutectic solvent pretreatment yielded 85.05 ± 0.66 g·L⁻¹ of total fermentable sugar (glucose: 60.96 ± 0.21 g·L⁻¹, xylose: 24.09 ± 0.87 g·L⁻¹) through enzymatic saccharification of sugarcane bagasse. Furthermore, fermentation of the pretreated sugarcane bagasse hydrolysate yielded 34.33 ± 3.15 g·L⁻¹ of bioethanol. These findings confirm the effectiveness of liquid hot water-deep eutectic solvent pretreatment in separating lignocellulosic components, thus presenting a sustainable and promising pretreatment method for maximizing the valuable utilization of biomass resources.

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提高甘蔗渣的生物乙醇产量：结合液态热水和深层共晶溶剂预处理优化酶法糖化过程

本研究提出了一种结合液态热水和深层共晶溶剂的可持续预处理方法，用于高效分馏甘蔗渣中的半纤维素、纤维素和木质素，从而促进 C5 和 C6 糖的综合利用。对甘蔗渣采用这种联合预处理策略可显著提高酶糖化和后续发酵的效果。实验结果表明，通过对甘蔗渣进行酶法糖化，液态热水-深共晶溶剂预处理可产生 85.05 ± 0.66 g-L-1 的总发酵糖（葡萄糖：60.96 ± 0.21 g-L-1，木糖：24.09 ± 0.87 g-L-1）。此外，发酵经预处理的甘蔗渣水解物可产生 34.33 ± 3.15 g-L-1 的生物乙醇。这些研究结果证实了液态热水-深共晶溶剂预处理在分离木质纤维素成分方面的有效性，从而为最大限度地利用生物物质资源提供了一种可持续的、有前途的预处理方法。

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来源期刊

Frontiers of Chemical Science and Engineering ENGINEERING, CHEMICAL-

CiteScore

7.60

自引率

6.70%

发文量

868

审稿时长

1 months

期刊介绍： Frontiers of Chemical Science and Engineering presents the latest developments in chemical science and engineering, emphasizing emerging and multidisciplinary fields and international trends in research and development. The journal promotes communication and exchange between scientists all over the world. The contents include original reviews, research papers and short communications. Coverage includes catalysis and reaction engineering, clean energy, functional material, nanotechnology and nanoscience, biomaterials and biotechnology, particle technology and multiphase processing, separation science and technology, sustainable technologies and green processing.