How long can't milk be drunk after opening?

Milk should not be drunk for 2 hours after opening.

The storage time of unsealed milk should be determined according to the season and the deterioration time of milk Because of the hot weather in summer, there are many bacteria in the air. If it is stored at room temperature, it may only be stored for 1-2 hours. The weather is cold in winter, and there are few bacteria in the environment. The temperature stored at room temperature is similar to that stored in refrigerator. At this point, the milk can be kept for about a day.

If milk is opened and put into the refrigerator, it can be put for 3-4 hours, but it is best to drink it within 4 hours, because the freezer of the refrigerator is not sterile. In addition, the spoilage time of milk is related to the storage mode of milk. It is best to seal it after opening and put it in the refrigerator for 4 hours. Try not to put it at room temperature, especially in summer.

Milk purchase guide

The main product sold in the market is ultra-high temperature instant sterilized milk (that is, milk preserved at room temperature). When buying, you should not only go to a qualified big market, but also check whether the packaging is intact and the label content is complete, especially pay attention to the shelf life. Pinch the texture of the package. If it feels hard, it may deteriorate.

Fresh milk is a milky white or yellowish uniform colloidal liquid, without precipitation, clots, impurities, viscosity and odor. Fresh milk contains sugars and volatile fatty acids, so it is slightly sweet and fragrant, and has a pure milk flavor.