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A Tetra Pak ultra-pasteurization line. Ultra-high temperature processing (UHT), ultra-heat treatment, or ultra-pasteurization [1] is a food processing technology that sterilizes liquid food by heating it above 140 °C (284 °F) – the temperature required to kill bacterial endospores – for two to five seconds. [2]
Pasteurized milk in Japan A 1912 Chicago Department of Health poster explains household pasteurization to mothers.. In food processing, pasteurization (also pasteurisation) is a process of food preservation in which packaged foods (e.g., milk and fruit juices) are treated with mild heat, usually to less than 100 °C (212 °F), to eliminate pathogens and extend shelf life.
The shelf life of pasteurized milk in HDPE bottles and LDPE pouches has been determined to be between 10 and 21 days when stored at 4–8 °C. Other factors such as light and temperature abuse have effects. Shelf life can be extended by ultrapasteurisation and aseptic processing. [6] [7]
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Raw milk is not nutritionally superior to pasteurized milk. Raw milk does not contain natural antimicrobial components that make milk safe. Raw milk does not contain nisin for pathogen inhibition.
Once opened, however, ultra-pasteurized and other almond milks (sold refrigerated) should be used within seven to 10 days, and not left out unrefrigerated for longer than two hours. VeselovaElena ...