Sliced ready-to-eat (RTE) meat products are susceptible to growth of the foodborne pathogenic bacterium, Listeria monocytogenes. Cold atmospheric pressure plasma (CAPP) may be applicable for surface decontamination in sealed bags thus avoiding recontamination. Plasmas (Fig. 1), created in neutral gas by adding energy, are sources of antimicrobial substances including UV photons, charged particles, and, if oxygen is present, reactive oxygen species such as superoxide, hydroxyl radicals, and ozone.