The degree of esterification influences the bioactivity of pectic polysaccharides isolated from Lithocarpus litseifolius
文献类型： 外文期刊
作者： Huang, Yu-Jing 1 ; Feng, Jing 1 ; Deng, Yong 2 ; Li, Jie 1 ; Liu, Hong-Yan 3 ; Liang, Qing 4 ; Hu, Yi-Chen 1 ; Zhang, Jian-Yong 2 ; Zou, Liang 1 ; Wu, Ding-Tao 1 ;
作者机构： 1.Chengdu Univ, Sch Food & Biol Engn, Key Lab Coarse Cereal Proc, Minist Agr & Rural Affairs, Chengdu 610106, Sichuan, Peoples R China
2.Zunyi Med Univ, Sch Pharm, Zunyi 563000, Guizhou, Peoples R China
3.Chinese Acad Agr Sci, Inst Urban Agr, Res Ctr Plants & Human Hlth, Natl Agr Sci & Technol Ctr, Chengdu 610213, Sichuan, Peoples R China
4.Zunyi Med & Pharmaceut Coll, Dept Pharm, Zunyi 563006, Guizhou, Peoples R China
5.Chengdu Agr Coll, Chengdu 611130, Sichuan, Peoples R China
关键词： Sweet tea; Pectic polysaccharide; Esterified degree; Biological function; Microbial fermentation characteristic
期刊名称：FOOD CHEMISTRY-X （ 影响因子：8.2； 五年影响因子：8.2 ）
ISSN： 2590-1575
年卷期： 2025 年 27 卷
页码：
收录情况： SCI
摘要： Pectic polysaccharides are the mainly bioactive components in Lithocarpus litseifolius (sweet tea) leaves. Nevertheless, owing to their diverse and complex chemical structures, the detailed structure-function relationships (SFR) of pectic polysaccharides from sweet tea (STP) are still unclear. Herein, the influence of STP's esterified degree on its diverse biological functions was uncovered. The results showed that the de-esterified STPs with a middle-esterified degree (33.53 %) and a low-esterified degree (7.66 %) were successfully prepared when compared with the original high-esterified STP (47.01 %), and their primary structural features were almost stable after the controllable de-esterification treatment. Furthermore, the findings inferred that STP's antioxidant, anti-diabetic, and immunostimulatory functions showed inverse correlations with the esterified degree. Moreover, the de-esterified STP with a lower-esterified degree could be more easily utilized by intestinal microorganisms to positively regulate the gut microbial composition. Overall, these findings can provide valuable insights for elucidating STP's precise SFR.
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