Characterizations and microsphere formulation of polysaccharide from the marine clam (Mactra veneriformis)

► Polysaccharide in Mactra veneriformis (MVPS) is lacking suitable applications. ► MVPS are noncrystalline but thermostable polymers. ► MVPS can easily dissolve in water media and solution belongs to non-Newtonian fluids. ► Well morphological microspheres were prepared by MVPS and chitosan blend. ► The blend microspheres can encapsulate drug and achieve the sustained release.