一种具有益生元潜力的薏苡仁多糖（CSP-A）的结构表征和发酵特性。

IF 3.5 2区农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY

Journal of the Science of Food and Agriculture Pub Date : 2025-08-04 DOI:10.1002/jsfa.70086

Wenyan Liang, Jing Zhang, Yijun Yao, Wenfei Xiong, Xintian Hu, Xingrong Ju, Lifeng Wang

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引用次数: 0

摘要

背景：薏苡仁具有很高的营养价值和保健功能，广泛种植于东亚和东南亚地区，在中国作为保健食品和药粮已有1000多年的历史。本研究旨在表征薏苡仁中一种新型多糖（CSP-A）的结构，并研究其在人体肠道菌群中的消化和发酵特性。结果：CSP-A是一种水溶性中性多糖（分子量~ 2498 kDa），含有葡萄糖和甘露糖，具有吡喃基团和α-糖苷键，主要含有α-d-Glcp-（1→和→6）和α-d-Glcp-（1→）两个单糖残基。CSP-A的主链由α-1,6-d- glc组成，侧链为少量的线性α-1-d- glcp。发酵48 h后，总碳水化合物的87.77%被肠道菌群利用。CSP- a水解液中总短链脂肪酸（SCFAs）达到58.0 mg/mL，高于CSP和对照组。结论：从薏苡仁中分离得到一种新的多糖CSP-A。与CSP相比，纯化后的多糖CSP- a具有更高的利用率和更好的益生元活性。CSP-A在促进有益菌生长的同时，还能抑制肠道疾病的生长。因此，CSP-A具有发展成为益生元产品的潜力。©2025化学工业协会。

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Structural characterization and fermentation properties of a novel coix seed polysaccharide (CSP-A) with prebiotic potential.

Background: Coix seeds, with high nutritional values and health functions, widely grown in East and Southeast Asia, has been traditionally used as a healthy food and medicinal grain for more than 1000 years in China. This study aimed to characterize the structure of a novel polysaccharide from Coix seed (CSP-A) and investigate its digestion and fermentation properties by human gut microbiota.

Results: CSP-A is a water-soluble neutral polysaccharide (molecular weight ~ 2498 kDa) containing glucose and mannose with pyran group and α-glycosidic bond, and mainly contained α-d-Glcp-(1 → and →6), and α-d-Glcp-(1 →) two monosaccharide residues. The main chain of CSP-A was composed of α-1,6-d-Glc, and with small amounts of linear α-1-d-Glcp as the side-chains. After 48 h fermentation, 87.77% of total carbohydrate was utilized by gut microbiota. Total short-chain fatty acids (SCFAs) in the hydrolysate of CSP-A reached 58.0 mg/mL, higher than in CSP or control.

Conclusion: A novel polysaccharide CSP-A was purified from coix seed. Compared to the CSP, the purified polysaccharide CSP-A showed higher utilization rate and better prebiotic activity. As well as promoting the growth of beneficial bacteria, CSP-A inhibits the growth of intestinal disorders. Therefore, CSP-A has potential to developed into prebiotic products. © 2025 Society of Chemical Industry.

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来源期刊

Journal of the Science of Food and Agriculture 工程技术-农业综合

CiteScore

8.10

自引率

4.90%

发文量

634

审稿时长

3.1 months

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