1. Generally, the storage period of pork in the freezer is 4-5 months, and no more than half a year. The best freezing temperature is minus 15-16°C. As the storage time becomes longer and longer, the nutrients of the pork will be lost and the taste will become worse. In addition, a kind of 'psychrophilic bacteria' called Listeria will be produced, which can slowly grow at low temperatures of 0-10℃. Growth and reproduction.

2. Regarding the shelf life issue, if it is vacuum packed and processed aseptically, a shelf life of 1 year to 18 months can be achieved, but once the packaging is opened, the shelf life will be shortened rapidly. .

If pork is kept in the refrigerator for too long, its cell structure will be destroyed and water will be lost. At this time, the pork will look yellow and dry due to airflow, and it will taste like wood. , has no fragrance, and tastes very bad. This type of meat has been stored for too long, and the meat quality has changed. Moreover, the meat that has been frozen for a long time contains relatively high levels of carcinogens.