The most frequent antiphagent is ultraviolet (UV) radiation (λ = 100 -400 nm), affecting virions by the direct generation of radicals and damaging the viral genome, causing a decrease in viral infectivity , or by the generation of hydroxyl radicals that inactivate viral polymerases . Hence, applying phages exposed to UV (either by choice, where both factors are used to fight bacteria, or as an unwanted side effect, e.g., in agriculture) is hindered. Our previous study showed the efficacy of Congo red dye for selective bacteriophage protection from UV irradiation . However, that dye was considered hazardous and potentially harmful to the environment and animals . Therefore, the application of Congo red-based protocols turned out to be limited to procedures that don't involve living creatures, with the necessity of the dye recovery from aqueous solutions. Thus, the need to find protective, selective, and non-hazardous agents seemed indispensable. Several food dyes -including brilliant blue FCF (E132), Allura red (E129), and sunset yellow FCF (E110), are known for their interactions with various proteins or even bacteriophages . Brilliant blue FCF (Blue 1) resembles brilliant blue R-250 (Coomassie blue) used for protein staining in gel electrophoresis. Due to these features, food dyes appear as compelling candidates for bacteriophage protection against UV irradiation to facilitate simultaneous sterilization by both factors.