Question

What causes large ice crystals to form on frozen food and its packaging?

A. Cross-contact
B. Cross-contamination
C. Time-temper

Answer 1

Large ice crystals on frozen food are caused by time-temperature fluctuations leading to freezer burn. Minimizing this effect can be achieved by controlling the quantity of ice, container thickness and surface area, and maintaining a consistent low temperature. The correct answer is option C.

Step-by-step explanation:

Large ice crystals forming on frozen food and its packaging is primarily caused by time-temperature fluctuations. This process, known as freezer burn, occurs when food is not sealed properly, and water molecules within the food migrate to the coldest part of the freezer and form ice crystals. Over time, as the temperature in the freezer fluctuates, the ice can sublimate (change from solid to gas), leading to dehydration and oxidation of the food. This results in the dry, leathery texture often associated with freezer burn.

To minimize ice crystal formation and freezer burn, the following methods can be implemented:

1. Use a smaller quantity of ice (smaller m).
2. Use containers with greater thickness (larger d).
3. Use containers with smaller surface areas (smaller A).
4. Use a lower ambient temperature outside the container (smaller T₂).