Which method is used to store food safely to prolong its shelf life?

Storing food safely to prolong its shelf life is best achieved through proper refrigeration and freezing techniques. Refrigeration slows down the growth of bacteria, yeast, and molds by keeping temperatures low, typically below 40°F (4°C), which helps in preserving the quality and safety of perishable foods. Freezing, on the other hand, halts the growth of microorganisms altogether by converting moisture in the food into ice and maintaining temperatures below 0°F (-18°C).

Effective refrigeration and freezing involve not only maintaining the correct temperatures but also using proper storage containers and ensuring that food is packaged correctly to minimize exposure to air, which can lead to freezer burn or spoilage. This method helps retain nutritional value and texture, making it the most reliable way to extend food shelf life.