Food freshness-retaining, sterilization and disinfection method

The invention provides a food freshness-retaining, sterilization and disinfection method. The food freshness-retaining, sterilization and disinfection method comprises the following steps: step 1 adding a food-grade acid type auxiliary agent into a food processing process to change the pH value of a food in a production process so that the pH reaches to be 2.0-3.0; step 2 stirring for 5-10 minutes; step 3 adding a food-grade alkali type auxiliary agent and neutralizing; and step 4 continually stirring for 2-5 minutes and finishing a freshness-retaining, sterilization and disinfection process. According to the food freshness-retaining, sterilization and disinfection method, the sterilization and disinfection aim can be realized and no residues are remained; and the processed food can be detected by a detection mechanism and the food safety is guaranteed. The food freshness-retaining, sterilization and disinfection method has the advantages that 1 the cost is low; 2 the energy consumption is low and the method is low-carbon and environmentally friendly; 3 the time is short and the whole process can be finished within 5-10 minutes; 4 no residues are remained; 5 the operation is simple; 6 industrialized production can be realized; and 7 main raw materials can be purchased in the market anytime and anywhere and are not limited by time and places.