Related Experiment Video
Updated: Feb 14, 2026

Comparative Study on the Polysaccharide Contents and Antioxidant Activities of Hippophae rhamnoides subsp. sinensis and Hippophae gyantsensis
Published on: August 15, 2025
Two complement fixing pectic polysaccharides from pedicel of Lycium barbarum L. promote cellular antioxidant defense
Ruyu Yao1, Chao Huang2, Xingfu Chen3
1Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, PR China; Department of Systematic and Evolutionary Botany, University of Zurich, Zollikerstrasse 107, Zurich 8008, Switzerland.
Abstract:
Purification, characterization and biological activities of polysaccharides from Lycium barbarum pedicel were investigated in this study. Two polysaccharides, PLBP-I-I and PLBP-II-I, were obtained from water extracts by anion exchange chromatography and gel filtration. Structural elucidation based on IR, 1H NMR, and 13C NMR spectra indicated that these two fractions were typical pectic polysaccharides, with homogalacturonan and rhamnogalacturonan type I regions and arabinogalactan side chains, and some of the galacturonic acid units were methyl esterified. Both fractions exhibited potent complement fixating activity and pro-antioxidant defense capacity, and those two fractions showed different activities. The higher complement fixation activity was obtained in fraction PLBP-I-I, while the higher pro-antioxidant defense capacity was obtained in fraction PLBP-II-I, which may be due to the structural differences between those two fractions. Thus, the pedicel of L. barbarum could be used as a potential source for natural immunomodulator and antioxidant.
More Related Videos
06:54Evaluation of the Interplay Between the Complement Protein C1q and Hyaluronic Acid in Promoting Cell Adhesion
Published on: June 15, 2019
10:30A Generalized Method for Determining Free Soluble Phenolic Acid Composition and Antioxidant Capacity of Cereals and Legumes
Published on: June 10, 2022
Related Concept Videos
Cellulose and Pectic Polysaccharides
As a cell matures, its cell wall specializes according to its type. For example, the...
Biosynthesis of Polysaccharides
Complement System
Complementation Tests
Organisms heterozygous for different mutations are crossed pairwise in all combinations. If present on different genes, the mutations can complement each other by providing the missing...
The Eukaryotic Promoter Region
Defenses Against Pathogens and Herbivores