The shelf life and safety of MAP food is influenced by a number of factors including the nature of the food, the gaseousenvironment inside the package, the nature of package, the storage temperature, and the packaging process and machinery. One of the major concerns of MAP foods is temperature abuse because the biostatic effects of CO2 are temperature-dependent, and a rise in temperature during periods when the food was at nonrefrigerated temperatures would alert consumers to temperature abuse due to the appearance of undesirable odors, colors, or slime. However, the absence of O2 will favor the growth of anaerobic microorganisms over aerobic spoilage organisms (Robertson, 2006).