For many years, mammalian gelatin has been widely used in the food and pharmaceutical industries due to its excellent film-forming ability and low melting point. Generally, gelatin films exhibit good oxygen barrier properties at low relative humidity (RH). However, they have poor oxygen barrier properties at high RH due to their hydrophilic properties (Mchugh & Krochta, 1994). This characteristic has limited the application of gelatin film as a packaging material, however this property may be useful in oxygen scavenging film application. Gelatin film is normally oxygen impermeable however it can be rendered oxygen permeable by application of water or water vapor. Therefore, moisture could be used as the activator that triggers the oxygen scavenging reaction in the gelatin film.