Certified Cheese Professional Practice Exam

What temperature and duration define HHST Pasteurization?

1. 212F for 1 second

2. 280F for 2 seconds

3. 212F for 0.01 seconds

4. 280F for 0.5 seconds

The correct answer is: 212F for 0.01 seconds

The definition of HHST (High-Temperature Short-Time) pasteurization is characterized by a specific combination of time and temperature aimed at effectively eliminating harmful microorganisms while preserving the quality of the product. The correct parameters for HHST pasteurization are indeed 280°F for a duration of 2 seconds. This method ensures that the product is heated to a high temperature for a very short time, which helps to preserve flavor, texture, and nutritional value. While other options may display different time and temperature combinations, they do not meet the standards established for HHST pasteurization. Specifically, 212°F is the boiling point of water, but it does not represent the high-temperature approach essential for this pasteurization technique. Similarly, the time durations given in the other responses, whether too long or too brief, do not adhere to the HHST standards, reinforcing why the correct answer is centered on the combination that allows for effective pasteurization while maintaining product integrity.