Understanding the Science Behind Chilled and Frozen Meat Safety
The European Food Safety Authority (EFSA) has evaluated how bacteria grow in meat from cattle, pigs, and sheep during chilling, storage, and thawing — from slaughter to when it reaches consumers. The assessment provides important insights for processors, regulators, and supply chain operators on minimizing foodborne risks.
Source: EFSA, 27 January 2026 (efsa.europa.eu)
Why This Matters
- Microbial growth affects both pathogens (e.g., Salmonella, Listeria) and spoilage bacteria that impact meat quality.
Storage conditions before freezing are critical in controlling bacterial growth.
EFSA’s findings help align EU regulations with scientific evidence, supporting safer meat for consumers.
Assessment Methodology
- EFSA analyzed multiple storage and thawing scenarios against a reference condition: meat stored without vacuum packaging at 7°C for 15 days.
Used mathematical modeling to predict bacterial growth.
Focused on equivalence times — how long meat can be safely stored before freezing to match bacterial levels of the reference scenario.
Key Findings
- Vacuum-packed meat at 7°C
Equivalence reached in 5–6 days post-slaughter.
Controls Salmonella growth effectively. - Meat stored at 3°C
Spoilage bacteria drive equivalence at 29–30 days.
High initial contamination can still cause earlier spoilage. - Thawing meat at 4°C or 7°C
Bacterial growth is limited or absent, showing thawing is less critical than pre-freezing storage. - Post-thaw storage at 4°C for up to 7 days
Additional bacterial growth possible, highlighting the need for strict post-thaw handling.
Implications for Meat Processors
Cold chain management is crucial:
- Maintain consistent temperatures from slaughter to freezing.
Use vacuum packaging to limit microbial growth.
Minimize time before freezing.
Carefully manage post-thaw storage conditions.
Next Steps for EU Regulation
- EFSA’s assessment informs EU food safety legislation on frozen meat.
Expected outcomes: more precise rules for chilling and freezing meat, better protecting consumers.
Takeaways for Industry
- Reduced spoilage: Optimized storage reduces losses.
Improved safety: Pathogens are better controlled before freezing.
Regulatory compliance: Data supports adherence to EU microbiological standards.
Operational insight: Models help plan storage, freezing, and distribution schedules.
Conclusion
EFSA’s work emphasizes the importance of scientifically guided cold chain practices. By managing chilling, freezing, and thawing effectively, processors can ensure safer, higher-quality meat reaches consumers, while staying aligned with EU regulations.
Source: EFSA (2026). Meat intended for freezing: EFSA assesses bacterial growth in meat before it reaches consumers. www.efsa.europa.eu