In general, the quality and taste of milk changes after it expires, and off-flavors, sediments or fermentation may occur. In this case, the milk is no longer suitable for consumption, otherwise it may have an impact on your health. The following is a detailed introduction to the expiration time of milk.
1. Milk expiration time.
The shelf life of milk is usually calculated from the date of production, which is generally 3-7 days. However, it should be noted that milk within the shelf life is prone to premature spoilage when stored in poor conditions. Therefore, when buying and consuming milk, try to follow the following principles:
1.Check the packaging when buying: When buying milk, check that the packaging is in good condition and that it is well sealed. Damaged packaging can easily lead to bacterial invasion and affect the quality of milk.
2.Storage conditions: Milk should be stored in a dark, cool, and dry environment. Avoid exposing milk to sunlight to avoid oxidation of fats and affect the taste. At the same time, be careful not to put the milk on the refrigerator door, frequent opening and closing of the door will cause temperature fluctuations in the refrigerator and affect the quality of the milk.
3.Pay attention to the expiration date: Before consuming milk, check the production date and expiration date on the package. Do not consume expired milk to avoid health effects.
4.Post-opening treatment: Once opened, the milk should be consumed within 3-5 days. If you can't finish it all at once, you can divide it into small portions and put it in the refrigerator, but it should not exceed 24 hours.
2. Extended content.
1.Manifestations of milk spoilage: Expired milk may occur in the following situations:
1) Deterioration of taste: The taste of expired milk may have a sour taste, peculiar smell, etc., which is not suitable for consumption.
2) Presence of sediment: The proteins in expired milk may be denatured, forming sediments that make the milk opaque.
3) Fermentation phenomenon: The excessive multiplication of lactic acid bacteria in expired milk may lead to fermentation phenomenon and make the milk produce gas.
2.Uses of expired milk: Although expired milk is not edible, it still has certain uses, such as:
1) Wipe the furniture: Wiping the furniture with expired milk can remove stains and increase the shine of the furniture at the same time.
2) Nourishing plants: Expired milk is diluted with water and used to water plants, which can provide nutrients for plants and promote growth.
3) Care for leather: Wiping leather products with expired milk can restore their luster and prolong their service life.
In short, when consuming milk, it is necessary to follow the expiration date and storage conditions, and try not to eat it once it is found to be expired. At the same time, expired milk also has a certain use value, which can be tried to clean and care for daily necessities.