What are the storage methods of meat preservation? How to keep meat frozen?

1, low-temperature refrigeration preservation: (1) Cold chain system is the most important means of meat preservation. (2) Refrigeration means that meat is kept at a temperature slightly higher than its freezing point, usually between 2 and 4℃.

2. Low moisture activity preservation:-Moisture refers to water that can be used by microorganisms. The most common preservation methods with low water activity include drying and adding salt and sugar. Other additives such as phosphate and starch will reduce the water activity of meat.

3. Heat treatment: (1) is used to kill spoilage bacteria and pathogenic bacteria in meat and inhibit the activity of enzymes that can cause corruption; (2) Heating can not prevent the oxidation of oil and myoglobin, but can promote its oxidation; (3) Heat-treated meat products must be used in conjunction with other preservation methods.

4. Fermentation treatment: Fermented meat products have good preservation characteristics. Controlled by artificial environment, the growth of lactic acid bacteria in meat products is dominant, which transforms carbohydrates in meat products into lactic acid, lowers the PH value of products and inhibits the growth of other microorganisms. Fermented meat products should also be combined with other preservation technologies.