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Oxygen (O₂) is responsible either directly or indirectly for the deterioration of many foods. For example, direct oxidation reactions lead to fruit browning and vegetable oils rancidity. Degradation of food by indirect action of O₂ includes aerobic microorganism food spoilage. The inclusion of O₂ scavengers in the food kit will also hold O₂ rates very small, which are beneficial for many purposes because they will increase the food's life.

Successful production of oxygen scavenger films was achieved by applying titanium nanoparticles (TiO₂) to different polymers, which are used to pack a wide range of oxygen-sensitive products. In particular, the emphasis was on the photocatalytic behavior of ultraviolet nanocrystalline titania. Since TiO₂ acts by a photocatalytic mechanism, the requirement for ultraviolet absorption (UVA) light is its major drawback [53].