In addition to preventing accidents, the Cerealtop is intended to preserve freshness - and not to obscure the cereal box's graphics.

Commercial mouthwashes usually contain a preservative such as sodium benzoate to preserve freshness once the container has been opened.

Immediate cleaning and chilling are the best ways to preserve freshness.

Food rotation is important to preserve freshness.

It vacuum-seals food to keep air out and preserve freshness.

Various teams of actors will perform the play to preserve freshness.

My favorite is the notice on a box of crackers that reads, "Reseal inner bag to preserve freshness."

In addition to their effects on leavening, fats also serve to tenderize breads and preserve freshness.

This smoked salmon comes in vacuum-sealed packaging to preserve freshness.