The heterogeneous and complex structural characteristics of lignin present a significant challenge to predict its processability (e.g., depolymerization, modifications etc.) to valuable products. This study provides a detailed characterization and comparison of structural properties of seven representative biorefinery lignin samples derived from forest and agricultural residues, which were subjected to representative pretreatment methods. A range of wet chemistry and spectroscopy methods were applied to determine specific lignin structural characteristics such as functional groups, inter‐unit linkages, and peak molecular weight. In parallel, oxidative depolymerization of these lignin samples to either monomeric phenolic compounds or dicarboxylic acids were conducted, and the product yields were quantified. Based on these results (lignin structural characteristics and monomer yields), we applied for the first time the multivariable linear estimation (MVLE) approach using R Statistics (an open‐source programming language and software environment for statistical computing and graphics) to gain insight toward a quantitative correlation between lignin structural properties and their conversion reactivity toward oxidative depolymerization to monomers.

中文翻译：

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木质素对单体的反应性与其结构特征之间定量关系的新见解

木质素的异质和复杂结构特征对预测其对有价值产品的可加工性（例如，解聚，改性等）提出了重大挑战。这项研究提供了详细的表征，并比较了七个代表性的来自森林和农业残留物的生物精炼木质素样品的结构特性，这些样品经过了代表性的预处理方法。应用了一系列湿化学和光谱学方法来确定特定的木质素结构特征，例如官能团，单元间键和峰分子量。同时，将这些木质素样品氧化解聚为单体酚类化合物或二元羧酸，并对产物收率进行定量。