Microflora and color of ground beef in gas exchange modified atmosphere packaging with abusive display temperatures
Gas exchange modified atmosphere packaging (GEMAP) with display gas of 80% O2:20% CO2 retarded microbial growth and improved color stability of ground beef patties compared with vacuum packaging (VP) followed by air-permeable polyvinylchloride (PVC) overwrapping during 3 d of retail display. Predominant microorganisms for GEMAP were Pseudomonas, Yersinia, Aeromonas, and Enterobacter and for VP-PVC were Pseudomonas, Brochothrix, Aeromonas, Enterobacter. Moraxella, and Lactobacillus. Lower levels of pathogens were isolated in GEMAP samples with 7°C than 15°C display temperature. Patties were darker (lower L*) with those with 15°C than with 7°C display and redder (higher a*) in GEMAP than VP-PVC. Good manufacturing practices should be followed with MAP meat to reduce the risk of pathogenic microbial growth.
Publication Source (Journal or Book title)
Journal of Food Science
Ho, C., Huang, N., & McMillin, K. (2003). Microflora and color of ground beef in gas exchange modified atmosphere packaging with abusive display temperatures. Journal of Food Science, 68 (5), 1771-1776. https://doi.org/10.1111/j.1365-2621.2003.tb12327.x