Food Safety Science: How Do Vending Machine Meals Stay Fresh for a Week?
Context Question about the science behind food safety? Some vending machines offer vacuum/airtight packaged meals that stay good for a week or longer. Other vending machines offer freshly made meals in non-airtight containers claiming it's good for a week or so. But is that possible? If so, what's the difference between me making a meal and storing it versus the way they make and store it that makes it safe to store it for more than 2 days? Simple Answer Vending machine meals are made in a controlled environment. The food is vacuum sealed to remove air. The meals are often pasteurized or sterilized. The meals are stored at a safe temperature. The meals are packaged in a way that prevents contamination. Detailed Answer Vending machine meals are typically made in a controlled environment, such as a commercial kitchen. This environment is designed to minimize the risk of contamination. The food is prepared using clean equipment and utensils, and the workers who handle the food are...