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Carbohydrate Polymers 2018-Sep

Structural analysis and antioxidant activities of neutral polysaccharide isolated from Epimedium koreanum Nakai.

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Krækjan er vistuð á klemmuspjaldið
Bo Li
Ning Zhang
Dong Xue Wang
Lili Jiao
Ying Tan
Jing Wang
Hui Li
Wei Wu
Da Cheng Jiang

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Útdráttur

The structure and antioxidant activity of a neutral polysaccharide (named as EFPN-1) from Epimedium koreanum Nakai were studied. Based on the results from high performance gel permeation chromatography, methylation GC-MS and 1D/2D nuclear magnetic resonance spectroscopy, EFPN-1 was a branched polysaccharide with a molecular weight of 21.9 kD and containing over 60% of glucose. Its backbone was composed of (1 → 4)-β-d-Glcp and (1 → 3)-β-d-Galp, branched partially at O-6 of both residues, with a degree of branching of 40.4% and terminated mainly with Ara and Gal, as well as trace amount of Gal. Antioxidant tests showed that EFPN-1 exhibited a strong capacity on DPPH and hydroxyl radical scavenging, ferrous ion chelation and reducing antioxidant powder. EFPN-1 has potential to be developed as a natural antioxidant.

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