Because of their high polarity, most edible films are good barriers to gasses but poor barrier to moisture (Azeredo and others 2012a). As a result, these semipermeable barriers may create modified atmosphere packaging systems when applied to fruits and vegetables, whose respiratory gasses (oxygen and carbon dioxide) can be exchanged in a controlled fashion and lead to slower metabolism and ethylene production (Sothornvit and Rodsamran 2010b).