Physical properties and antioxidant capacity of starch-sodium caseinate films containing lipids

► Starch-sodium caseinate films with oleic acid and/or α-tocopherol were obtained. ► Lipid incorporation provoked phase separation in the film matrix. ► After storage, lipid-containing films were more stretchable. ► The incorporation of oleic acid increased oxygen permeability of the films. ► The incorporation of α-tocopherol greatly increased the antioxidant capacity of films.