: This occurs when liquid molecules slow down enough that their natural attractions pull them into fixed, solid positions.
: Essential items for a well-stocked freezer include beef, chicken, pork, seafood, and meal kits. You can also freeze dairy products like shredded cheese and butter, as well as cooked rice, noodles, and bread.
: Removing any remaining unfrozen water molecules. Freeze
: Preserving plasma and medical samples for research.
: For summer fruits like berries, lay them out on a tray to freeze individually before placing them in a bag to prevent them from sticking together. 4. Industry Applications : This occurs when liquid molecules slow down
: Avoid freezing mayonnaise, gelatin, or crumb toppings (like those on casseroles), as they often become soggy or separate upon thawing .
: Solidifying the water content rapidly to protect cellular structure. Primary Drying : Sublimation under a vacuum. : Removing any remaining unfrozen water molecules
: While freeze-drying extends shelf life by lowering water activity to below 0.85, it does not kill bacteria ; microorganisms simply go dormant and can reactivate if moisture is added back. 3. Food Preservation & Storage