Barrier and tensile properties of whey protein-candelilla wax film/sheet

Addition of the CAN had a smaller effect on barrier than on tensile properties. Compressed extruded films had WVP similar to solution-cast films and much smaller compared to the extruded sheets. SEM showed pores in the extruded sheet were closed by the compression process. OP for compressed extruded films was much smaller than for solution-cast films. Compressed extruded films also had increased strength and flexibility compared to solution-cast films. The more practical extrusion and compression processes produce films with better overall properties.