In-Process Microbial Load Dynamics and Production Environment Microbial Hygiene in the Manufacturing of Low-Processed...

Area of Science:

• Food Microbiology
• Food Safety Engineering
• Microbial Dynamics in Food Processing

Background:

• Low-processed ready-to-eat (RTE) meat products face significant microbial contamination risks.
• Limited data exists on in-process microbial dynamics during RTE meat production.

Purpose of the Study:

• Investigate microbial dynamics and environmental hygiene in vacuum-packed RTE pork bar production.
• Identify process-inherent contamination risks in low-processed RTE meat.

Main Methods:

• Collected samples at successive processing stages and from food-contact/non-food-contact surfaces.
• Assessed process hygiene using indicator organisms (e.g., Aerobic Plate Count, Enterobacteriaceae).
• Monitored specific pathogens like Listeria monocytogenes and Salmonella spp.

Main Results:

• Microbial counts increased significantly (1.5-2.3 log CFU/g) during early processing stages.
• Contamination hotspots identified on frequently handled surfaces, particularly pre- and post-lethality.
• Post-process contamination potential indicated by microbial reappearance after baking and during packaging/maturation.

Conclusions:

• Production-inherent factors, rather than system failures, drive microbial contamination in RTE pork bars.
• Targeted control measures are crucial for step-specific limitations within Good Hygiene Practices (GHP), Good Manufacturing Practices (GMP), and Hazard Analysis and Critical Control Points (HACCP).
• Empirical data supports risk-based approaches in Food Safety Management Systems for similar RTE meat production.