Characterization, chemical modification and bioactivities of a polysaccharide from Stropharia rugosoannulata

文献类型： 外文期刊

第一作者： Jin, Mingzhi

作者： Jin, Mingzhi;Zhang, Wenqing;Zhang, Xinmiao;Huang, Qianli;Ye, Ming;Chen, Hui;Chen, Hui

作者机构：

关键词： Stropharia rugosoannulata; Polysaccharide; Chemical characterization; Chemical modification; Antioxidant activity; Enzyme inhibitory activity

期刊名称：PROCESS BIOCHEMISTRY （ 影响因子：4.4； 五年影响因子：4.2 ）

ISSN： 1359-5113

年卷期： 2023 年 128 卷

页码：

收录情况： SCI

摘要： This study evaluates the chemical structure of a heteropolysaccharide (SP-1a) from the fruiting bodies of Stro-pharia rugosoannulata and the antioxidant activity and enzyme inhibitory activity of its derivatives. The results showed that SP-1a (2.29 x104 Da) contained fucose, glucose and galactose, and possessed the backbone of [-> 3)-alpha-D-Glcp-(1 ->] and [-> 3,6)-alpha-D-Glcp-(1 ->] with side chains [-> 6)-alpha-D-Galp-(1 ->] and T-alpha-D-Galp. Furthermore, carboxymethylated and phosphorylated modification of SP-1a (named as CSP-1a and PSP-1a) had good thermal stability and strong rehydration. Moreover, CSP-1a displayed stable DPPH scavenging ability (46.77%) and reducing power ability (0.434), as well as alpha-glucosidase inhibitory activity (60.98%) and alpha-amylase inhibitory activity (67.20%). Besides, PSP-1a presented significant hydroxyl radical scavenging ability (94.18%). The findings suggested that appropriate chemical modifications can improve the physicochemical properties and biological activities of polysaccharides from Stropharia rugosoannulata, providing hints and theoretical supports for further development of corresponding drug or food ingredients.

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