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新型三元酸性深溶性溶剂,具有高可回收性,旨在从竹子中选择性分离红素和可发酵糖
Chen Xu1, Fanyang Meng1, Yaru Li1
1Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210037, PR China; College of Chemical Engineering, Nanjing Forestry University, 159 Longpan Road, 210037 Nanjing, PR China.
International journal of biological macromolecules
|March 19, 2025
概括
一种新型的深溶性溶剂有效预处理了竹子生物质,去除了半纤维素和素,同时保留了纤维素. 这种可持续的方法实现了高葡萄糖产量,并显示出出色的可回收性,用于高效的纤维素生物质提炼.
科学领域:
- 生物质预处理 生物质预处理
- 绿色化学 绿色化学
- 可持续材料 可持续材料
背景情况:
- 红纤维素生物质是一种有希望的可再生资源.
- 有效的预处理对于生物质转化至关重要.
- 深度环氧溶剂为生物质加工提供可调节的特性.
研究的目的:
- 为竹子生物质预处理合成和评估一种新型三元酸性深溶剂 (DES).
- 评估DES在去除半纤维素和红素的效率,同时保留纤维素.
- 调查DES的可回收性和潜在机制.
主要方法:
- 使用乙胺化物 (EH),DL-酸 (MA) 和聚乙烯糖醇400 (PEG400) 合成三元酸性DES.
- 竹子生物质预处理的DES的应用,固体/液体比为1:7.
- 预处理生物质的酶性水解以确定葡萄糖产量.
- 在多个循环中对DES的回收实验.
- 对回收的DES进行分析,以了解其稳定性.
主要成果:
- 通过EH/MA/PEG400 DES实现了显著的半纤维素 (75.42%) 和红素 (85.30%) 的去除,保留了87.53%的纤维素.
- 在72小时的酶化水解后,预处理的竹子生物质产生了87.38%的葡萄糖.
- 在七个循环中,DES保持了高性能,在第七个循环中去除了79.34%的红素和85.29%的葡萄糖产量.
- 从碳水化合物降解中积累的甲酸被确定为DES可回收性的关键因素.
结论:
- 合成的EH/MA/PEG400 DES是一种高效和可回收的介质,用于纤维蛋白生物质的预处理.
- 这种方法为生物质提炼和生物燃料生产提供了可持续和高效的途径.
- 这项研究突出了定制的DES在价值化纤维纤维素资源方面的潜力.
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