At present, yogurt has packaging materials such as bottles, cups, bags and house-shaped packaging. The shelf life is as short as a few days and as long as 20 days. Yogurt in porcelain bottles is refrigerated at 2-6 C, and the shelf life is 3-7 days; House-shaped yogurt is packaged in a house-shaped carton and refrigerated at 0-4 C with a shelf life of 7 days. Cup yogurt is refrigerated at 2-6 C, and the shelf life is more than 10 days; Bagged yogurt is refrigerated at 2-6 C with a shelf life of 48 hours. Yogurt drinks can be stored in a cool and dry place at room temperature, and the shelf life can reach 8 months.
Because yogurt does not contain preservatives, if the storage conditions are not good, the living lactic acid bacteria in yogurt will continue to multiply, and the generated lactic acid will continuously improve the acidity, and the taste of yogurt will become too sour, and in severe cases, yogurt will deteriorate. Therefore, we should pay special attention to the preservation environment of yogurt when buying yogurt in summer. It is best not to put yogurt in a high temperature place for a long time.