Developing gelatin-starch blends for use as capsule materials

► PEG acted as both plasticizer and compatibilizer for gelatin/starch blends. ► PEG increased transparency and toughness of gelatin/starch blends. ► The “onset” of gelation temperature became less pronounced with increasing starch content. ► Linear microstructure of amylose, and hydrophilic hydroxylpropylene improved compatibility.