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Highly Pure Water-Soluble Aspen Wood Hemicelluloses Derived by Catalytic Peracetic Treatment and Their Antioxidant and Flocculation Activity

Valentina Sergeevna Borovkova1,2,*, Yuriy Nikolaevich Malyar1,2, Vladislav Alexandrovich Ionin1,2, Alexander Sergeevich Kazachenko1,2
1 Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch Russian Academy of Sciences, Akademgorodok 50/24, Krasnoyarsk, 660036, Russia
2 School of Non-Ferrous Metals and Material Science, Siberian Federal University, pr. Svobodny 79, Krasnoyarsk, 660041, Russia
* Corresponding Author: Valentina Sergeevna Borovkova. Email: bing0015@mail.ru

Journal of Renewable Materials https://doi.org/10.32604/jrm.2025.02025-0067

Received 28 March 2025; Accepted 28 May 2025; Published online 05 August 2025

Abstract

The valorization of plant biomass towards high-value chemicals is a global trend aimed at solving the problem of the huge accumulation of lignocellulosic waste. Plant polysaccharides are natural polymers that make up about 20% by weight of biomass, with a unique variety of structures and properties that depend on the type of raw materials and the method of their extraction. In this study, the effect of variability of the oxidative delignification process conditions in the «acetic acid-hydrogen peroxide-water-(NH4)6Mo7O24» on the extraction and properties of aspen (Populus tremula) wood hemicelluloses was investigated for the first time. The developed method for the extraction of hemicelluloses provided the production of water-soluble polysaccharides with a high yield (to 62.55 wt.% in relation to total content in wood), high purity, with a branched structure and active centers on the side chains in the form of uronic acids. In the course of the work, it was found that the obtained hemicelluloses are mainly represented by partially acetylated galactoxylan and glucuronoxylan. Promising results of biological studies of the antioxidant and flocculation activity of xylans are promising for the use of plant polysaccharides in health care and food industry.

Graphical Abstract

Highly Pure Water-Soluble Aspen Wood Hemicelluloses Derived by Catalytic Peracetic Treatment and Their Antioxidant and Flocculation Activity

Keywords

Antioxidant activity; biomass; delignification; flocculating capability; hemicelluloses; Mark-Houwink-Sakurada; xylan

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