Structural characterization and antioxidant activities of polysaccharides extracted from Polygonati rhizoma pomace.

ABSTRACT: The present study aimed to prepare polysaccharides from the pomace of Polygonatum rhizome and characterize their structural features and biological activities. After hot water extraction and DEAE-52 cellulose fractionation, a neutral polysaccharide (PKP) was obtained with 91.85% sugars and 0.45% proteins. Structural characterization indicated that PKP contained a main fraction with a molecular weight of 4.634 × 10³ Da and was composed of →1)-β-D-Fruf-(2→ and →6)-β-D-Fruf-(2→ residues. PKP was a semi-crystalline polymer, and the Congo red assay suggested the presence of triple-helix structure in PKP. PKP exhibited moderate radical scavenging activity (including 15.55% inhibition of DPPH, 21.48% inhibition of ABTS, and 22.52% inhibition of ·OH) a

SUBMITTER: Bu Y 

PROVIDER: S-EPMC11402156 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature