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用乙醇/深溶解剂对生物质进行预处理,以获得更高的成分回收,并获得含有高β-O-4含量的红素
Weidong Li1, Sen Ma1, Lin Luo1
1College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361102, China.
International journal of biological macromolecules
|July 15, 2024
概括
一种新的乙醇/深溶解剂 (DES) 对竹子的预处理,可保存素结构和β-O-4键. 这种方法增强了素的回收,并改善了生物燃料生产的酶性消化能力.
科学领域:
- 生物质预处理 生物质预处理
- 绿色化学 绿色化学
- 生物精炼是生物精炼的一种方式.
背景情况:
- 深度环氧化溶剂 (DES) 对于素提取是有效的,但通常会导致过度的β-O-4键裂变.
- 在生物质预处理期间保持红素的结构完整性对于价值化至关重要.
研究的目的:
- 开发一种新的预处理系统,使用化胆-酸DES与竹子的乙醇相结合.
- 为了分析使用这种乙醇/DES系统提取的红素的特性.
- 评估对酶消化能力和成分回收的影响.
主要方法:
- 使用胆化-酸DES和乙醇系统进行竹子预处理.
- 使用凝透色谱 (GPC) 和核磁共振 (NMR) 光谱分析提取的红素.
- 对葡萄糖和西兰的酶性消化能力的评估.
主要成果:
- 乙醇/DES预处理产生了中等,均的分子量和完整结构 (40.29%的β-O-4含量) 的红素.
- 与DES-only提取相比,红素的结构完整性明显更好.
- 实现了高水平的素去除 (78.81%) 和提高葡萄糖 (72.68%) 和西兰 (92.95%) 的酶性消化能力.
- 回收的DES保持了预处理效率.
结论:
- 乙醇/DES系统为竹子预处理提供了一种可行的方法,保留了木质素的结构完整性.
- 这种方法促进了高β-O-4含量和S单位的红素的制备.
- 该系统可实现高效的脱和高成分回收,支持生物炼油应用.
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