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优化玉米的预处理,使用环保的深溶解剂来增强红素的提取和纤维素转化为葡萄糖

Bruna Green Rodrigues¹, Álvaro H M José¹, Carina Aline Prado¹

¹Department of Biotechnology, Lorena Engineering School, University of São Paulo, 12602-810 Lorena, SP, Brazil.

International journal of biological macromolecules

|November 10, 2024

概括

深度浸泡溶剂 (DES) 通过调整温度和时间来优化生物质预处理. 胆化物/乳酸 (1:5) 实现了高素提取和纤维素转化,为工业应用铺平了道路.

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:

深度环氧溶剂 (DES) 为生物质预处理提供了对离子液体的环保和经济有效的替代品.
影响DES效率的关键因素包括键捐赠者 (HBD),键接受者 (HBA) 到HBD的摩尔比,温度和时间.
有限的研究全面研究了这些变量的相互作用,以优化生物质预处理.

研究的目的:

为了优化预处理变量,使用胆化物/乳酸 (1:5) DES用于生物质加工.
评估温度和时间对素提取,纤维素转化为葡萄糖和半纤维素去除的影响.
描述预处理的生物质和回收的木质素,用于下游价值化.

主要方法:

使用响应表面方法 (RSM) 采用2^2中央复合设计.
研究的变量是温度 (80-140°C) 和时间 (2-6小时),使用胆/乳酸 (1:5).
描述技术包括XDR,FTIR,NMR (1H,13C,2D-HSQC),TGA/DTG和GPC等.

主要成果:

最佳预处理条件被确定为123°C6小时.
实现了90.08%的红素提取,68.77%的纤维素转化为葡萄糖,77.34%的半纤维素去除.
恢复了52.52%的红素,其特征化学特性促进了价值化.

结论:

该研究成功优化了DES预处理,以有效地提取红素和转化纤维素.
来自最佳条件的特征材料支持它们对下游应用的潜力.
解决DES粘度和实施回收策略对于工业可扩展性至关重要.

关键词:

纤维素转化为葡萄糖的转换过程酸盐/LA 酸盐/LA 玉米,DES预处理的提取法的提取法

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