What is the maximum temperature for frozen items to ensure safety?

The maximum temperature for frozen items to ensure safety is -18 degrees Celsius. This temperature is crucial for preventing the growth of harmful bacteria and ensuring that food remains in a state that preserves its quality and safety. At or below -18 degrees Celsius, the biochemical reactions that can lead to food spoilage are significantly slowed down, which helps maintain the food's safety and nutritional value.

While temperatures higher than -18 degrees Celsius, such as the other options, may still freeze food to some extent, they can allow for increased bacterial activity and degrade the quality of the food over time. Maintaining frozen food at or below this critical temperature is a standard practice in food safety management and is also aligned with guidelines from health authorities regarding the storage of frozen food products.