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Which of the following is the time-temperature combination for LTST 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 minI got this question by my school principal while I was bunking the class.My question is taken from Heat Exchangers topic in division Building Blocks of Dairy Processing of Dairy Engineering

Answer» CORRECT answer is (c) 63°C for 30 MINUTES

Explanation: Low TEMPERATURE long time (LTLT) pasteurization INVOLVES heating the milk to 63°C for 30 minutes. The extended holding time causes alteration in the milk protein structure and TASTE.


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