What is the purpose of thermal processing in food preservation?

The purpose of thermal processing in food preservation is to kill harmful bacteria and extend shelf life through heat application. This method involves applying heat to food items, which effectively destroys microorganisms that can cause foodborne illnesses and spoilage. By reaching specific temperatures for designated periods, thermal processing ensures that the food remains safe for consumption and maintains its quality for a longer time.

Other aspects such as enhancing flavor, improving appearance, or reducing cooking time are secondary benefits or outcomes that may occur as a result of thermal processing but are not its primary purpose. The main goal is to ensure safety and preservation of food by eliminating various pathogens, thereby extending the food's shelf life.