UV radiation is in the field of food industry for disinfecting surfaces. Its applications include decontamination of surfaces of equipments in bakeries, cheese and meat plants, for decontamination of conveyor surfaces and for packaging containers such as boxes, bottles, cartons, tubes, films, foils and caps. As the interaction mainly occurs between microorganisms such as bacteria and viruses with the surface materials, efficacy of UV light mostly depends upon the surface structure of materials. Microbial inactivation is mostly in suspension with aqueous media or air.