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通过分支调节的寡合体分离和水解进行闭环纤维素糖化
Mizeng Wang1, Haolin Li1, Yutao Yang1
1Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
这项研究提出了一个可持续的生物炼油战略,使用盐水合物 (MSH) 来将纤维素转化为葡萄糖. 工程化分支葡萄糖寡合物增强葡萄糖分离和产量,为改善粮食安全提供了一条途径.
科学领域:
- 生物质转换生物质转换
- 可持续化学 可持续化学
- 生物炼油技术 生物炼油技术
背景情况:
- 纤维素回收和葡萄糖分离是基纤维素生物质价值化的主要障碍.
- 可持续的葡萄糖生产对于粮食安全和减少对化石燃料的依赖至关重要.
研究的目的:
- 为高效的纤维素水解和葡萄糖分离制定综合生物炼油战略.
- 通过盐水合物 (MSH) 和现场糖化工程来克服纤维素的复原性.
- 通过涉及分支葡萄糖寡合体的级联过程来提高葡萄糖产量和纯度.
主要方法:
- 使用化盐水合物 (LiBr MSH) 介导的水解与现场甘化工程.
- 在MSH中通过纤维素水解合成分支葡萄糖寡合物.
- 采用碳亲和分离来进行寡合体吸附和脱附.
- 进行了分支寡合物的轻度酸化,以产生葡萄糖.
主要成果:
- 在优化的MSH系统中实现了77.6%的寡合物产量和14.4%的葡萄糖转化.
- 工程化分支葡萄糖寡合物表现出3.2倍增强的吸附选择性 (816.69毫克g-1).
- 分枝寡合物显示了48%的水溶性改善和86.0%的脱吸效率.
- 几乎量化的葡萄糖产量 (98.4%) 通过分支寡合物的轻度酸水解获得.
- 与传统的纤维素水解相比,显示出7.3倍的葡萄糖产量改善.
结论:
- 综合生物炼油战略有效地克服了纤维素回收和葡萄糖分离的挑战.
- 在现场的糖化工程和碳亲和分离为生物质价值化提供了有效的途径.
- 这种方法提供了一种可持续和高能效的方法,用于从纤维素生产生物可利用的葡萄糖.
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