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Updated: Dec 20, 2025
Comparative Study on the Polysaccharide Contents and Antioxidant Activities of Hippophae rhamnoides subsp. sinensis and Hippophae gyantsensis
Published on: August 15, 2025
Purification, structural characterization and in vivo immunoregulatory activity of a novel polysaccharide from
Yongjie Wang1, Na Liu2, Xia Xue1
1Department of Pharmacy, The Second Hospital of Shandong University, Shandong University, Jinan 250033, PR China.
Abstract:
The purpose of this study was to study polysaccharides isolated from Polygonatum sibiricum to establish the structure-activity relationships of the active substances and to discover the optimal fraction for further development and application. Four polysaccharides fractions (PSP1, PSP2, PSP3 and PSP4) from P. sibiricum were obtained by DEAE-Sepharose Fast Flow ion-exchange chromatography. Acid hydrolysis and FT-IR spectral and NMR spectral analyses were employed for structural analysis. Our results illustrated that PSP with different chemical structure and monosaccharide composition showed different abilities to activate phagocytic activity in vitro. According to the preliminary screening results in vitro, the newly identified water-soluble polysaccharides of PSP3 were selected for further evaluation in vivo. The results demonstrated that PSP3 possessed an immunomodulatory function and could be regarded as a promising candidate as an immunomodulator.
