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三种干燥方法对木质素特性影响的比较

Adil Mazar¹, Michael Paleologou²

¹African Sustainable Agriculture Research Institute (ASARI), Mohammed VI Polytechnic University (UM6P), Laayoune 70000, Morocco; FPInnovations, 570 Boulevard Saint-Jean, Pointe Claire, Quebec H9R 3J9, Canada.

International journal of biological macromolecules

|December 28, 2023

概括

标准化素分析需要了解干燥方法. 冷干燥最好保存素基组,与干燥不同,干导致显著的降解,特别是在基质形式的素中.

科学领域:

生物质的表征生物质的表征
在Lignin分析中,
标准化工作的努力.

背景情况:

开发标准化法用于素表征对于国家和国际可比性至关重要.
现有标准正在出现,但仍然需要可靠的干固体含量测量方法.

研究的目的:

协助ISO/TC6委员会建立可靠的标准方法来测量素的干固体含量.
研究不同干燥方法对红素完整性的影响.

主要方法:

三种干燥技术的比较:导电炉干燥 (105°C),真空炉干燥 (60°C) 和冷干燥.
分析了十个不同的素样本,包括软木和硬木 kraft 素 (酸/形式) 和水解素.
确定每种方法所需达到固体含量恒定的时间.

主要成果:

干燥时间到恒定的固体:7h (烤箱),48h (真空烤箱),24h (冷干燥).
基质形式的实力青素表现出比酸性形式的青素更大的降解敏感性.
与冷干燥相比,真空或烤箱干燥显著降低了基群含量 (>50-70%) 在基质形式的素中.

结论:

冷干燥是保留红素结构和功能群的首选方法,特别是基含量.
导电和真空烤箱干燥方法可能会导致敏感的红素类型的显著降解.
需要进一步的研究,以建立最佳的干燥条件,以准确地确定木质素干固体含量.

关键词:

生物炼油厂是一个生物炼油厂.干燥方法干燥方法动力工艺是动力工艺的过程.在Lignin的基础上.的结构的结构

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