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Updated: Jul 17, 2026

Comparative Study on the Polysaccharide Contents and Antioxidant Activities of Hippophae rhamnoides subsp. sinensis and Hippophae gyantsensis
Published on: August 15, 2025
[Research of polysaccharide from Dioscorea opposita Thunb]
Qin Xu1, Zeng-lai Xu, Zhen-guo Shen
1Jiangsu Instiute of Botany, Chinese Academy of Sciences, Nanjing Botanical Garden, Nanjing 210014, China.
Objective:
To isolate a homogeneous polysaccharide RP from RDP (a crude polysaccharide from Dioscorea opposita Thunb.) , and study its preliminary composition and structure.
Methods:
RP was obtained with water extraction, alcohol sedimentation, CTAB deprotein, cellulose column and SephadexG-100 column. The purities of RP were identified by SephadexG-200. PC analysis on its acidic hydrolysates was used to determine the sugar components. Sephadex chromatography was used to mensurate its molecular weight. IR was used to analysis RP.
Results:
RP was homogeneous. IR indicated that RP had beta configurations. The compositon was identified by paper chromatography as glucose, D-mannose, D-galactose.
Conclusion:
The research could provide a theoretical foundation for further development and utilization.
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