Question

Temperature used in UHT treatment is __________

(a) 90-100 °C

(b) 100-120 °C

(c) 120-125 °C

(d) 130-140 °C

This question was addressed to me by my school teacher while I was bunking the class.

My doubt stems from Collection of Milk in section Collection and Reception of Milk of Dairy Engineering

Answer 1

Correct answer is (d) 130-140 °C

To explain: Ultra-high temperature processing (UHT) milk is heated to above 135 °C (275 °F). This is the temperature required to kill spores in milk – for 1 to 2 seconds.