Milk is an important product that is often kept in the refrigerator by almost any person. It is beneficial for the body due to the content of proteins, vitamins and calcium. I wonder how milk is pasteurized?
Pasteurized milk is what stores offer us. It is sold in packs and is very popular. What is the difference between pasteurized milk and regular milk? And is she there?
What is pasteurization?
Pasteurization is a process of heat treatment of liquids at a temperature of 60 ° C for an hour or 70-80 ° C for about 30 minutes. Why is milk pasteurized? The fact is that fresh milk contains not only beneficial but also harmful bacteria. During pasteurization, they are rendered harmless, as a result of which pasteurized milk is stored much longer than usual.
Heat treatment, with the help of which the pasteurization procedure is performed, has been popular since the nineteenth century. Now this process has undergone significant changes. First, the milk is heated to the required temperature (depending on the time), after which the product itself is cooled in special packages, which, of course, are sterilized.
Pasteurization of milk allows you to keep the product fresh for almost three days (60 hours). You can also make cottage cheese, yoghurts and so on from it. Sometimes milk goes through an ultra-pasteurization process. With this procedure, the liquid heats up to 135-150 ° C for a couple of seconds and instantly cools down to 4-5 ° C. After that, the shelf life of milk is two whole months.
How to make pasteurized milk at home?
First, you need to sterilize the container (glass jar) in which the milk will be stored. It takes no longer than twenty minutes to sterilize. Then you can proceed directly to the pasteurization procedure.
To do this, pour milk into the double boiler (its top), and water down. It is necessary to heat the liquid to 63 ° C (you cannot do without a thermometer) and hold it for half an hour, stirring. Next, lower the pan with milk into a container with cold water and wait until the temperature of the milk drops to 4 ° C. Then pour the milk into a sterilized jar. You can store in the refrigerator for two weeks (no longer).
Benefits of pasteurized milk
Pasteurized milk is suitable for those people who cannot stand the taste of fresh or fresh milk. Vitamins and other beneficial bacteria in such milk exceed their content in other varieties. Such milk does not contain preservatives, does not need to be boiled, and is excellent for a child's body.
