UHT vs Fresh
UHT: Ultra High Temperature. In the US the milk is heated up to 280 degrees Fahrenheit for 2 seconds. In Europe the milk is heated to 150 degrees Celsius for 5 seconds. This inactivates or kills all harmful microorganisms. Pasteurization: Fresh milk is heated up to 70-75 degrees Celsius for 15 seconds. This process (as with UHT milk) removes all harmful bacteria such as salmonella, Brucella abortus, toxoplasmosis and a whole host of other critters that can cause intestinal distress or worse. Apparently the high temperature of the UHT process changes the shape of the milk protein, which is referred to as denatured, making it slightly less available. Protein appears unaffected during the pasteurization process because lower temperatures are used. The difference of protein availability is about eight percent. That is, UHT makes 92 percent of the protein available and pasteurization, 100 percent.
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