数字农科院2.0

Integrated approach for cellulosic ethanol and succinic acid production: Gamma valerolactone-based pretreatment and co-fermentation of peanut shells

文献类型： 外文期刊

作者： Chao Xu;Wen Zhou;Zuohua Zhu;Siran Feng;Fang Fang;Dandan Liu;Xudong Liu;Shushi Huang;Qian Lin;Yuande Peng;Chunliang Xie

作者机构：

关键词： Cellulosic ethanol;Lignocellulosic biomass;Succinic acid

期刊名称： International Journal of Biological Macromolecules

ISSN： 0141-8130

年卷期： 2025 年 290 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： The inability to utilize pentose poses as a significant limitation to the production of cellulosic ethanol. To attain efficient raw material conversion and mitigate carbon dioxide emissions during cellulosic ethanol synthesis, a integrated approach focused on the co-processing of ethanol and succinic acid (SA) from peanut shells was proposed. The results demonstrated that the GVL system, containing 30 % water and catalyzed by dilute sulfuric acid, exhibited remarkable efficiency in pretreatment, boosting glucose yield sixfold relative to the untreated raw material. Under optimal conditions of 82 mM sulfuric acid, 141 °C, 56 min, and a solid-to-liquid ratio of 0.07, the glucose yield of the pretreated peanut shell reached 79.0 ± 0.22 %. Through recycling the pretreatment solvent, Tween 80-assisted enzymatic catalysis, and coupling of saccharification and co-fermentation processes, the complete utilization of lignocellulosic feedstocks and sustainable production of high titers of SA (86.1 g/kg) and ethanol (66.4 g/kg) were achieved. This study developed a novel integrated procedure for the efficient co-production of SA and ethanol from peanut shells, offering a new perspective for the efficient biorefinery of lignocellulosic biomass.

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