In the United States, the practice of refrigerating eggs is a food safety recommendation and is influenced by government regulations. Unlike some other countries, such as many in Europe, where eggs are often sold at room temperature, the U.S. mandates that eggs should be washed and refrigerated to reduce the risk of foodborne illnesses, particularly caused by Salmonella bacteria.
Here are the primary reasons why Americans refrigerate eggs:
Washing Eggs: In the U.S., eggs are typically washed and sanitized before they are sold to consumers. This washing process removes any potential contaminants from the eggshell, including fecal matter that may carry harmful bacteria like Salmonella. However, washing also removes the egg's natural protective cuticle, which can increase the risk of bacteria entering through the pores of the shell. Refrigeration helps to slow down bacterial growth and extends the shelf life of the washed eggs.
Salmonella Concerns: Salmonella is a common foodborne pathogen that can be present on the outside of eggshells, even if the chicken that laid the egg was not infected. By refrigerating eggs, any potential Salmonella present on the shell will not multiply as rapidly, reducing the risk of illness if the eggs are consumed raw or undercooked.
Consistency with Regulations: The U.S. Food and Drug Administration (FDA) requires that graded eggs be stored and transported under refrigeration (at or below 45°F or 7°C). This ensures that the eggs are kept at a safe temperature throughout the supply chain.
Consumer Expectations: Over time, the practice of refrigerating eggs has become ingrained in American culture. Consumers have come to expect eggs to be refrigerated in stores, and they follow suit when storing eggs at home to maintain consistency and safety.
It's worth noting that different countries have their own regulations and practices regarding egg storage. In some places, eggs are not washed, or a different method of sanitization is used, allowing them to be stored at room temperature safely. As food safety guidelines and regulations can vary by region, it's essential to follow the recommendations specific to your location for handling and storing eggs to ensure food safety.