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We prepared bilayer films of iron yam-pea starch and corn zein to evaluate their potential application in the packaging of instant foods and condiments. We found that the water resistance and mechanical properties of bilayer films were improved after adding a layer of corn zein compared with the monolayer films of the starch materials. Scanning electron microscopy revealed that the bilayers were close and this was reflected in increased thermal stability and biocompatibility between layers withdoi:10.1590/fst.29820 fatcat:6dwzun7psffipjcqwgncfnouna