What is the ideal temperature range for safe refrigeration of perishable foods?

The ideal temperature range for safe refrigeration of perishable foods is 30°F to 40°F (-1°C to 4°C). This range is crucial because it helps to slow down the growth of bacteria, thereby reducing the risk of foodborne illnesses. Keeping perishable items within this temperature window ensures that they remain fresh for a longer duration, maintaining both their safety and quality.

Storing food above 40°F can lead to a rapid increase in bacterial growth, making it unsafe for consumption. For instance, the temperature ranges of 41°F to 50°F (5°C to 10°C) are too warm for safe refrigeration and pose a higher risk for spoilage. Additionally, while temperatures from 0°F to 32°F (-18°C to 0°C) are suitable for freezing foods rather than refrigeration, they do not apply to the safe cooling of perishable ready-to-eat items. Lastly, the range of 35°F to 45°F (2°C to 7°C) is slightly broader than the optimal temperature for preventing bacterial growth, making it less ideal for food protection compared to the 30°F to 40°F range. Therefore, the selection of 30°F to 40°F is the most appropriate for