05
Dec
Remove the pot of milk from the heat and place it in a sink or large bowl filled with ice water. One way the dairy industry saves energy involves using the heat of the heated pasteurized milk to warm the next batch of cold raw milk.
An alternative process is flash pasteurization in which the milk is heated to 72 c 162 f for at least 15 seconds.
How do you pasteurise milk. The best way to pasteurize milk is to pour raw milk into a double boiler and stir it over medium high heat. Keep the milk above 165 f for 15 seconds or below 145 f for 30 minutes and then remove the milk from heat. Put the top section of the double boiler that holds the heated milk into a pan of cold or ice water to cool the milk.
Cool the milk until it reaches 40 degrees f or below. Pour the pasteurized milk into the disinfected milk bottles. Cover and store in the refrigerator.
There are two ways of pasteurizing raw milk commercially. The first method is ltlt. Low temperature long time.
Such machines are very cheap and simple. They heat milk to 145 4 f and keep it at this temperature for 30 minutes. Remove the pot of milk from the heat and place it in a sink or large bowl filled with ice water.
Stir constantly until the temperature drops to 40 f. Store pasteurized milk in the refrigerator. Here s the cool part.
One way the dairy industry saves energy involves using the heat of the heated pasteurized milk to warm the next batch of cold raw milk. Cold milk is then used to cool the heated pasteurized milk. By doing this the industry uses heating and refrigeration energy more efficiently during the milk pasteurization process.
Pasteurization is heat treatment to destroy bacteria. You can pasteurize milk by heating it to 63 c 45 f for 30 minutes or to 72 c or 161 f for 15 seconds and then quickly cooling it to 4 c 39 f. The latter temperature is best for milk used in cheesemaking.
Pasteurization or pasteurisation is a process in which packaged and non packaged foods such as milk and fruit juice are treated with mild heat usually to less than 100 c 212 f to eliminate pathogens and extend shelf life. For effective pasteurization milk can be heated up to 145 degrees fahrenheit for 30 minutes but this method isn t very common. More common is heating milk up to at least 161 6 degrees fahrenheit for 15 seconds which is known as high temperature short time htst pasteurization or flash pasteurization.
An alternative process is flash pasteurization in which the milk is heated to 72 c 162 f for at least 15 seconds. Uht milk packaged in a sterile container has a typical unrefrigerated shelf life of six to nine months.