In vitro antioxidant activity of the polysaccharide from Auricularia auricula and its structural characterisation

A new polysaccharide (AAP) was extracted from by water extraction and alcohol precipitation. The antioxidant activity showed that AAP had a good scavenging effect on ABTS free radicals. Then AAP was purified by DEAE-52 ion exchange chromatography to obtain the purified component pAAP. The structure...

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Published in:Natural product research 2023-12, p.1-8
Main Authors: Lei, Min, Wang, Mengqing, Ma, Wentao, Li, Na, Huang, Jiwen, Jiang, Xinjian, Wu, Wenhui, Zhang, Chaoyan
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Ma, Wentao
Li, Na
Huang, Jiwen
Jiang, Xinjian
Wu, Wenhui
Zhang, Chaoyan
description A new polysaccharide (AAP) was extracted from by water extraction and alcohol precipitation. The antioxidant activity showed that AAP had a good scavenging effect on ABTS free radicals. Then AAP was purified by DEAE-52 ion exchange chromatography to obtain the purified component pAAP. The structure analysis showed that the molecular weight (Mw) of pAAP was 96.768 kDa, which was composed of rhamnose (Rha), arabinose (Ara), fucose (Fuc), xylose (Xyl), mannose (Man), glucose (Glu) and galactose (Gal), with the ratio of 0.1:0.157:0.33:2.797:2.881:2.988:0.587, and contained α-pyranose configuration and β-pyranose configuration. Field emission scanning electron microscopy and atomic force microscopy revealed the special conformation of pAAP in the ring and chain shape.
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title In vitro antioxidant activity of the polysaccharide from Auricularia auricula and its structural characterisation
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