Characterization of polysaccharide from longan pulp as the macrophage stimulator

A 44.7-kDa polysaccharide LPIIa from longan pulp was mainly composed of →6)-Glc-(1→, →5)-Ara-(1→, →4)-Man-(1→ and →6)-Gal-(1→. It stimulated macrophage activation partlyviaTLR4 and TLR2, followed by p38 MAPK- and NF-κB-dependent signaling pathways.