barrier properties are intrinsically linked to physical and chemical characteristics of their constituents. The polymers most
commonly used in the preparation of edible films and coatings are proteins (gelatin, casein, wheat gluten and zein), polysaccharides (starch, pectin, cellulose, alginate and carrageenan) and lipids (stearic acid, waxes and fatty acid esters), which can be used alone or in combinations