Ultra-high temperature treatment or (less often) ultra-high temperature treatment (referred to as UHT) is to heat the food for more than 135 ° C (275 ° F) for 1-2 seconds, UHT Milk Machine part of the food for a short time Sterilization, which is the temperature required to kill spores in milk
High temperatures also reduce processing time, which reduces damage to nutrients. The most common UHT product is milk, but this method is also used in juices, creams, yogurt, wine, soups and stews.
High temperatures during ultra-high temperature processing can cause Maillard to brown and alter the sensory properties of dairy products.
The typical shelf life of UHT milk is 6-9 months until it is opened. The milk is heated to 72 ° C (161.6 ° F) for at least 15 seconds compared to HTST pasteurization (high temperature / short time).

High temperature short-time pasteurized milk

In fact, one of the more common forms of pasteurization is high temperature short-time pasteurization. This process kills the bacteria in the milk while retaining the necessary vitamins and nutrients. The milk is heated to 72 - 74 degrees Celsius (162 - 165 degrees Fahrenheit) for 15 - 20 seconds to kill the Brucella, which is the most heat-resistant pathogen in raw milk.

This technology extends the shelf life without adding any preservatives. After pasteurization, the HTST milk is transferred to a cooling zone and cooled to 4 degrees Celsius (39 degrees Fahrenheit). From there, it is refrigerated during the remaining shelf life. HTST milk usually lasts 16 - 21 days.

Ultra high temperature milk (ultra-high temperature pasteurization)

Another very popular milk is ultra high temperature pasteurization. UHT pasteurization is the process of heating milk to 135-150 degrees Celsius (275-302 degrees Fahrenheit) for 2 - 3 seconds, cooling immediately, and aseptically packaging in an airtight container.

This process kills all bacteria present. Although all the bad bacteria have been killed, unfortunately some nutrients and vitamins have been killed due to the high temperatures in the pasteurization process. UHT pasteurization extends from the Mini Dairy Plant to extend the shelf life to 6-9 months (until it is open), but does not require refrigeration until it is opened.