Which of the following practices helps ensure food integrity in storage?

Keeping food items tightly sealed is crucial for maintaining food integrity during storage. This practice prevents contaminants such as bacteria, pests, and moisture from compromising the quality and safety of the food. When food is properly sealed, it minimizes exposure to air, which can lead to spoilage and degradation of the product over time.

Moreover, tightly sealed containers help to preserve flavors and nutritional value by limiting oxidation and the absorption of unwanted odors from the environment. This is particularly important for perishable items that might otherwise spoil if not protected adequately.

In contrast, other practices, such as storing food in direct contact with floors, can expose items to dirt and bacteria, while using clear containers primarily aids in visibility but does not necessarily ensure safety. Additionally, mixing different types of food in one container can lead to cross-contamination, which can pose serious health risks. Thus, maintaining proper sealing of food items is an essential step in ensuring their integrity in storage.