Canning preserves food

Question

Quizplus · Accepted Answer

Canning preserves food by exposing it to high heat, which kills any bacteria or other microorganisms that could spoil the food. This allows the food to be stored for an extended period without the need for refrigeration. Aseptic packaging (A) involves sterilizing the packaging and the food separately and then packaging the food in a sterile environment. Exposure to chemicals (B) or radiation (D) can also be used to preserve food, but these methods are less common and can have safety concerns. Exposure to high pH (E) can be used for some types of food preservation, such as pickling, but is not typically used for canning.

Canning Preserves Food