Chemical and biological characterization of pectin-like polysaccharides from the bark of the Malian medicinal tree Cola cordifolia

► New bioactive pectins isolated from the bark of Cola cordifolia. ► One polymer are repeating units of [2→)[α-d-Gal(1→3)]α-l-Rha(1→4)α-d-GalA(1→]. ► Immunomodulating effects are shown in complement assay and macrophages.