Structural characterization and in vitro antioxidant activities of a neutral polysaccharide from Allium macrostemon Bunge

ZHANG Zhan-jun; WANG Fu-hua; GE Hong; ZHANG Jun; LI Hai-feng

doi:10.13386/j.issn1002-0306.2017.08.007

ZHANG Zhan-jun, WANG Fu-hua, GE Hong, ZHANG Jun, LI Hai-feng. Structural characterization and in vitro antioxidant activities of a neutral polysaccharide from Allium macrostemon Bunge[J]. Science and Technology of Food Industry, 2017, (08): 77-81. DOI: 10.13386/j.issn1002-0306.2017.08.007

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Structural characterization and in vitro antioxidant activities of a neutral polysaccharide from Allium macrostemon Bunge

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By using the method of stepwise ethanol precipitation and column chromatography, a neutral polysaccharide named AMP60 N was isolated from Allium macrostemon Bunge.The molecular weight of AMP60 N was estimated to be 11200 u, which was composed of arabinose, glucose and galactose. AMP60 N was characterized by using the periodic acid oxidation, Smith degradation, methylation, FT-IR, GC, GC-MS, NMR, etc.The in vitro antioxidant assay of AMP60 N showed that it had certain antioxidant activities in vitro, which showed dose-effect relationship, oxidation vesistance was weaker than V_C.

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Science and Technology of Food Industry

Structural characterization and in vitro antioxidant activities of a neutral polysaccharide from Allium macrostemon Bunge

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