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NewsContamination ControlFood TypeMicrobiologicalMeat/Poultry

EFSA: Aged Meat as Safe as Fresh Meat, When Done Correctly

By Bailee Henderson
dry aging meat

Credit: Kyle Mackie (macrz) via Unsplash

January 19, 2023

Aged meat does not carry greater food safety risks than fresh meat when aging is done correctly, according to a new scientific opinion adopted by the European Food Safety Authority (EFSA). The document focuses on the microbiological food safety risks of aged meat in comparison to fresh meat, and specifically examines current practices used by industry to dry-age and wet-age meat.

As aged meat rises in popularity among industry and restaurants, the European Commission commissioned the scientific opinion to fill existing knowledge gaps about the commodity.

Meat aging is a process during which microbes and enzymes break down the connective tissues in meat, resulting in a tenderized and flavorful final product. Wet-aging is used for beef, pork, and lamb that is stored and refrigerated in a vacuum package. Dry-aging is reserved for beef and involves refrigerating meat without packaging, causing a dry surface to form on the beef that is later removed from the final product.

EFSA scientists looked at the ways in which food business operators commonly dry- and wet-age meat, taking into consideration different combinations of time, temperature, relative humidity, air flow, packaging type, and other variables. EFSA also identified relevant microbiological hazards and bacteria associated with the aging of meat, including foodborne bacteria Shiga-toxin producing Escherichia coli (STEC), Salmonella, Staphylococcus aureus, Listeria monocytogenes, Yersina, Campylobacter, and Clostridium; mycotoxin-producing fungi Aspergillus and Penicillium; and numerous bacteria responsible for the spoilage of meat.

Regarding the mold-forming, mycotoxin-producing fungi Aspergillus and Penicillium, EFSA determined that mycotoxin production may be prevented during aging by ensuring a meat surface temperature of -0.5–3.0 °C, with a relative humidity (RH) of 75–85 percent and an airflow of 0.2–0.5 meters per second (m/s), for up to 35 days.

Aging of meat is a complex process that depends on a multitude of factors, many of which change with time, resulting in inconsistent bacterial behavior across products. However, using predictive modeling, EFSA concluded that there are no additional risks involved with aged meat in comparison to fresh meat, provided that the specific combination of time and temperature outlined in the scientific opinion are observed during the aging process. In general, EFSA recommends not allowing meat surface temperature to exceed 3 °C during aging.

Finally, using a hazards analysis and critical control points (HACCP) framework, EFSA identified practices during production and storage that would further assure the microbial safety of aged meat. The opinion stresses that HACCP principles and good hygiene practices should be applied at every step of aged meat production, and exemplifies current recommendations with dry-aged beef.

KEYWORDS: EFSA microbial control spoilage

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Baileehendersonmay23

Bailee Henderson is the Digital Editor of Food Safety Magazine. She can be reached at hendersonb@bnpmedia.com.

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