A heteropolysaccharide purified from leaves of Ilex latifolia displaying immunomodulatory activity in vitro and in vivo.

A novel polysaccharide (ILP50-2) was extracted, isolated and purified from the leaves of Ilex latifolia Thunb. Its structure was characterized as a repeating unit consisting of α-L-Araf-(1→, →3)-α-L-Araf-(1→, →5)-α-L-Araf-(1→, →3,5)-α-L-Araf-(1→, →2)-α-L-Rhap-(1→, →2,4)-α-L-Rhap-(1→, β-D-Galp-(1→, →4)-β-D-Galp-(1→, →4)-β-D-Glcp-(1→, →6)-α-D-Manp-(1→, and →3,6)-α-D-Galp-(1→. The absolute molecular weight of ILP50-2 was 1.49 × 10

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