数字农科院2.0

Physicochemical, Functional, and Antioxidant Properties of Pectic Polysaccharides Extracted from Three Bast Fibrous Plants

文献类型： 外文期刊

作者： Tang, Jialing;Li, Xi;Xu, Da;Liu, Genggui;Zhang, Xiaoqin;Xiong, Xiaofei;Yang, Xiai;Qin, Xiaoli;Deng, Yanchun;Hou, Chunsheng;Yang, Xiushi

作者机构：

关键词： bast fibrous plant;pectic polysaccharide;physicochemical characterization;functional property;antioxidant activity

期刊名称： LIFE-BASEL

ISSN：

年卷期： 2025 年 15 卷 10 期

页码：

收录情况： SCIE（2025版）

摘要： Bast fibrous plants are recognized as potential sources of pectin, yet the structural characteristics and functional properties of pectic polysaccharides derived from these plants remain insufficiently investigated. In this study, three pectic polysaccharides (HP, KP, and RP) were isolated from the bast fibers of Cannabis sativa L. (hemp), Hibiscus cannabinus L. (kenaf), and Boehmeria nivea L. (ramie) using an ammonium oxalate solution. Their chemical composition, monosaccharide profile, molecular weight, microstructure, and functional groups were analyzed by spectroscopic and chromatographic techniques. These polysaccharides exhibited remarkable uronic acid content (50.49-61.14%), a relatively low degree of esterification (19.51-34.26%), and high molecular weights ranging from 147.10 to 242.16 kDa. The predominant neutral sugars identified were rhamnose, arabinose, and galactose. Furthermore, HP, KP, and RP demonstrated superior thermal stability, emulsifying properties, water/oil holding capacity, and cholesterol binding ability compared with commercial citrus pectin (CP). They also exhibited stronger radical scavenging activity, with KP showing particularly notable antioxidant performance (IC50 = 1856 and 1485 mu g/mL for the DPPH and ABTS assays, respectively). Overall, these findings indicate that bast fibrous plants are promising alternative sources of pectic polysaccharides with favorable antioxidant properties, supporting their potential application as food additives or functional ingredients.

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