After acidic and high-temperature pretreatment of lignocellulosic biomass, researchers find that some lignin-like substance appeared on the surface of cellulose, which is called pseudo-lignin. Pseudo-lignin can be formed through carbohydrate degradation or substitution reactions on the aromatic ring of lignin. Pseudo-lignin is identified as Klason lignin in compositional analysis, whereas in Py-GC-MS analysis, it is recognized as material derived from carbohydrates. Pseudo-lignin is an aromatic substance. Similar to lignin, it also affects enzymatic hydrolysis efficiency by blocking the enzymatic reaction sites of cellulose and non-productive adsorption with cellulases. In order to offer theoretical guidance and technical support for the advancement of cost-effective and efficient new pretreatment technology, this review summarizes the latest advancements in research concerning the origins of pseudo-lignin, its effects on enzymatic hydrolysis, and the strategies that inhibit pseudo-lignin formation.

中文翻译：

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木质纤维素生物质的预处理工艺：假木质素形成的回顾


研究人员对木质纤维素生物质进行酸性高温预处理后，发现纤维素表面出现了一些类似木质素的物质，这种物质被称为假木质素。假木质素可以通过碳水化合物的降解或木质素芳环上的取代反应形成。假木质素在成分分析中被鉴定为Klason木质素，而在Py-GC-MS分析中，它被认为是源自碳水化合物的材料。假木质素是一种芳香物质。与木质素类似，它也通过阻断纤维素的酶促反应位点和与纤维素酶的非生产性吸附来影响酶水解效率。本文综述了假木质素的起源、对酶解的影响以及抑制假木质素的策略等方面的最新研究进展，为开发经济高效的新型预处理技术提供理论指导和技术支撑。 -木质素形成。