Need. The production process of fast food products has gone through many links, including processing, packaging and storage. Food will be polluted and invaded by bacteria, which will affect the safety and quality of products. In order to ensure the safety and hygiene of food, fast food products need to be sterilized during production. Sterilization is a process to ensure food safety by killing bacteria, viruses and other microorganisms. Sterilization methods include high temperature sterilization, ultraviolet sterilization and chemical sterilization.