Jump to main content
Jump to site search

Issue 4, 2018
Previous Article Next Article

The chemical structure and anti-aging bioactivity of an acid polysaccharide obtained from rose buds

Author affiliations

Abstract

An acid polysaccharide, named R-PL, was extracted from rose buds by hot water (80 °C) extraction and purified by Sephadex G-200. R-PL, extracted with a total yield of 1.90%, is a highly pure polysaccharide with a total sugar content of 92.51%. A single and symmetrically sharp peak in its high-performance gel-permeation chromatography (HPGPC) spectrum indicates that R-PL is a homogeneous polysaccharide with a molecular weight of 7.727 × 105 Da. Monosaccharide composition analysis shows that it consists of D-arabinose, D-xylose, D-glucose, D-galactose, D-galacturonic acid, and D-glucuronic acid with a molar ratio of 4.6 : 1.4 : 5.22 : 4.81 : 1 : 1.86. Structure analysis, such as FTIR spectroscopy, periodic acid oxidation, Smith degradation, methylation, and NMR analysis, reveals that R-PL has a backbone of →1)-α-D-Glcp-(6→ with side chains of →1)-β-D-Galp-(4,6→, →1)-β-D-Araf-(5→, →1)-α-D-Xylp-(4→, →1)-α-D-GlcpA-(2→ and →1)-α-D-GalpA-(4→. Its morphological characteristics were identified by Congo red experiments and scanning electron microscopy (SEM) analysis. The results show that R-PL does not have a triple-helical conformation in solution; its shape resembles twisted ribbons. Anti-oxidative and anti-aging analyses show that R-PL has significant antioxidant and anti-aging abilities in vivo.

Graphical abstract: The chemical structure and anti-aging bioactivity of an acid polysaccharide obtained from rose buds

Back to tab navigation

Article information


Submitted
29 Jan 2018
Accepted
05 Mar 2018
First published
06 Mar 2018

Food Funct., 2018,9, 2300-2312
Article type
Paper

The chemical structure and anti-aging bioactivity of an acid polysaccharide obtained from rose buds

Y. Tang, Z. Zhu, Y. Liu, H. Sun, Q. Song and Y. Zhang, Food Funct., 2018, 9, 2300
DOI: 10.1039/C8FO00206A

Social activity

Search articles by author

Spotlight

Advertisements