Ultra-high-temperature (UHT) pasteurization

Definition

Ultra-high-temperature (UHT) pasteurization is a food processing technology that sterilizes liquid food by heating it above 135°C for 2 to 5 seconds. This method extends shelf life without refrigeration and kills most microorganisms.

5 Must Know Facts For Your Next Test

1. UHT pasteurization involves heating liquids to temperatures above 135°C.
2. The process takes only 2 to 5 seconds, making it very efficient.
3. UHT-treated products have a longer shelf life compared to those treated with traditional pasteurization methods.
4. This method effectively kills most bacteria, viruses, and spores in the liquid.
5. UHT treatment can alter the taste and nutritional profile of some foods.

Review Questions

Related terms

Pasteurization:

A process that kills harmful bacteria in perishable goods by heating them to a specific temperature for a set period.

Sterilization:

A process that eliminates all forms of microbial life, including spores.

Thermophiles:

Microorganisms that thrive at relatively high temperatures, often found in hot environments.