期刊
CARBOHYDRATE POLYMERS
卷 246, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2020.116551
关键词
Chinese water chestnut peels; Polysaccharides; Structural features; Antioxidant activity; Immunomodulatory activity
资金
- China Postdoctoral Science Foundation [2019M662931]
Chinese water chestnut peels are a kind of vegetable processing waste containing many active components such as polysaccharides, the structure of which remains unknown. To elucidate the structure of polysaccharides from Chinese water chestnut peels, two polysaccharides named WVP-1 and WVP-2 were isolated. WVP-1 (3.16 kDa) consisted of mannose (1.75 %), glucose (84.69 %), galactose (6.32 %), and arabinose (7.24 %), while WVP-2 (56.97 kDa) was composed of mannose (3.18 %), rhamnose (1.52 %), glucuronic acid (1.42 %), galacturonic acid (4.83 %), glucose (11.51 %), galactose (36.02 %), and arabinose (41.53 %). Linkage and NMR data indicated that WVP-1 was composed mainly of -> 4)-alpha-D-Glcp(1 -> and a certain proportion of -> 3)-beta-D-Glcp-(1 ->, including linear and branched polysaccharides simultaneously. WVP-2 was a pectin-like polysaccharide with -> 4)-alpha-D-GalpA6Me-(1 -> units and the branch points of -> 3,4)-alpha-L-Arap-(1 ->, -> 3,6)-beta-D-Galp-(1 ->. WVP-2 exhibited stronger potential antioxidant and immunomodulatory activities than WVP-1 in vitro. These results provide a foundation for the further study of polysaccharides from Chinese water chestnut peels.
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