Does Freezing Destroy Bacteria and Parasites?
Freezing to 0 F inactivates any microbes — bacteria, yeasts and molds – – present in food. Once thawed, however, these microbes can again become active, multiplying under the right conditions to levels that can lead to foodborne illness. Since they will then grow at about the same rate as microorganisms on fresh food, you must handle thawed items as you would any perishable. Thorough cooking will destroy bacteria. Trichina and other parasites can be destroyed by sub-zero freezing temperatures. However, very strict government-supervised conditions must be met. It is not recommended to rely on home freezing to destroy trichina. Thorough cooking will destroy all parasites.
Freezing to 0F inactivates any microbes bacteria, yeasts and molds present in food. Once thawed, however, these microbes can again become active, multiplying under the right conditions to levels that can lead to foodborne illness. Since they will then grow at about the same rate as microorganisms on fresh food, you must handle thawed items as you would any perishable food. Thorough cooking will destroy bacteria. Wild game and raw seafood can harbor parasites which may infect people. Commercial sub-zero freezing temperatures can kill these parasites but home freezing is less reliable. Consider the risk when offered sushi or ceviche. Thorough cooking will destroy all parasites. Freshness and quality. Freshness and quality at the time of freezing affect the condition of frozen foods. If frozen at peak quality, foods emerge tasting better than foods frozen near the end of their useful life. So freeze extras sooner rather than later. Store all foods at 0 F or lower to retain vitamin content
