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Structural Characterization of Mannan Cell Wall Polysaccharides in Plants Using PACE

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Published on: October 16, 2017

Structure analysis of water-soluble polysaccharide CPPS3 isolated from Codonopsis pilosula.

Ya-jun Zhang¹, Li-xia Zhang, Jing-feng Yang

¹College of Life Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou, China. yajunzhang2005@yahoo.com.cn

|August 19, 2009

Summary

Researchers extracted a water-soluble polysaccharide, CPPS(3), from Codonopsis pilosula roots. Structural analysis revealed its composition and main chain, offering insights into this plant

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Area of Science:

Phytochemistry
Natural Product Chemistry
Carbohydrate Chemistry

Background:

Codonopsis pilosula is a traditional medicinal plant native to Northeast Asia.
Polysaccharides from medicinal plants often exhibit significant biological activities.
Understanding the structure of plant-derived polysaccharides is crucial for their application.

Purpose of the Study:

To extract and characterize a water-soluble polysaccharide from Codonopsis pilosula roots.
To determine the molecular weight, monosaccharide composition, and structural features of the isolated polysaccharide.
To provide a basis for further research into the potential applications of this compound.

Main Methods:

Boiled water extraction and ethanol precipitation were used for polysaccharide isolation.
Gel permeation chromatography was employed to estimate the molecular weight.
Spectroscopic techniques (NMR, FT-IR, Mass Spectrometry) and chemical analysis were utilized for structural elucidation.

Main Results:

A water-soluble polysaccharide, designated CPPS(3), was successfully extracted.
The molecular weight of CPPS(3) was determined to be 7.4 x 10^4 Da.
The polysaccharide is composed of galactose, arabinose, and rhamnose in a molar ratio of approximately 1.13:1.12:1, with a main chain structure involving specific glycosidic linkages.

Conclusions:

The study successfully isolated and characterized a novel polysaccharide, CPPS(3), from Codonopsis pilosula.
The detailed structural information provides a foundation for investigating the bioactivity and potential uses of CPPS(3).
This research contributes to the understanding of the chemical constituents of Codonopsis pilosula.