How long will the fresh milk keep in the fridge?
Pasteurized milk is one of our common "pasteurized milk"". As the name suggests, it is to adopt "pasteurization" to carry out sterilization of milk. The so-called "pasteurization", that is, over a long period of time, with low temperature to kill the pathogenic bacteria in milk, retaining the human body beneficial bacteria. However, because this method can not eliminate all microorganisms in milk, therefore, products need to be refrigerated, and the shelf life is relatively short, usually only a few days. Another is called "sterilization milk", which uses high temperature to kill all the bacteria in milk. As a small amount of microorganisms in milk do not exist, so it can be stored at room temperature, and the shelf life is relatively long, generally up to 3 months or more. Low temperature sterilization and retention of nutrition more pasteurized milk, due to the preservation of more nutrients, often called "fresh milk"". In fact, sterilization, whether it is low temperature or high temperature, will have a certain impact on the nutritional value of milk, and the real milk should be processed milk.
Milk is divided into two major categories. At present, most of the milk in the market belongs to antiseptic milk, which is what we often call "sterilized milk". Don't look at the milk packaging on different names, what "pure fresh milk", "fresh milk", "normal temperature milk", in fact, from the sterilization method, basically divided into two major categories.
The greatest effect of heating on milk nutrition is water soluble vitamins and proteins. In the heating process, about 10% of B vitamins and 25% of vitamin C are lost, and the deeper the heating, the more loss of these nutrients. Milk has a high nutritional value of whey protein, heating will also cause certain losses. The results showed that approximately 10% of whey protein was denatured in pasteurization, and 70% of whey protein was denatured in UHT milk. Therefore, pasteurized pasteurized milk is relatively higher in nutritional value. However, pasteurized milk and pasteurized milk are not real milk. Buy milk shelf-life short to drink nutrition better preservation of milk, in the purchase of a few points to note: one is to buy now to try to buy milk drink, short shelf life, do not believe that in order to facilitate the storage, the longer the shelf life of milk. Two is to buy the roof carton packaging milk, this milk more take low temperature pasteurization, nutrition and taste better, and most bottled milk is two times sterilization, nutritional value has decreased. Three is to buy back the milk, it is best to drink directly, do not heat again, otherwise it will cause further loss of nutrition. Open the packaging of milk should be drunk at once, the longer the time spent, the greater the loss of nutrition
