Which of the following is the time-temperature combination for HTST pasteurization?(a) 72°C to 74°C for 15 to 20 seconds(b) 135°C to 140°C for 2 to 4 seconds(c) 63°C for 30 minutes(d) 57°C to 68°C for 15 minThe question was posed to me during an internship interview.This is a very interesting question from Heat Exchangers in chapter Building Blocks of Dairy Processing of Dairy Engineering

Which of the following is the time-temperature combination for HTST pa

1.	Which of the following is the time-temperature combination for HTST pasteurization?(a) 72°C to 74°C for 15 to 20 seconds(b) 135°C to 140°C for 2 to 4 seconds(c) 63°C for 30 minutes(d) 57°C to 68°C for 15 minThe question was posed to me during an internship interview.This is a very interesting question from Heat Exchangers in chapter Building Blocks of Dairy Processing of Dairy Engineering
Answer» Correct choice is (a) 72°C to 74°C for 15 to 20 SECONDS Easiest explanation: High temperature short TIME (HTST) PASTEURIZATION. HEAT the milk to between 72°C to 74°C for 15 to 20 seconds. Targets resistant PATHOGENIC bacterial spores (Clostridium botulinum spores).

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