Question

The Pasteurization temperature time combination for ice-cream mix for batch method.

• A. 65$^\circ$C for not less than 30 min.
• B. 80$^\circ$C for not less than 30 min.
• C. 90$^\circ$C for 15 min.
• D. 135--149$^\circ$C for few min.

Hint:

Batch pasteurization = Low temperature + Long time (LTLT method).

Answer 1

The Correct Option is A

Concept: Pasteurization of ice cream mix ensures destruction of pathogens and proper hydration of ingredients. Batch pasteurization uses lower temperature for longer time.

Step 1: Batch method principle.
Batch method uses:
• Lower temperature
• Longer holding time

Step 2: Standard condition.
For ice cream mix: \[ 65^\circ C \text{ for 30 minutes} \]

Step 3: Comparison with HTST.

• HTST uses higher temperature for shorter time
• UHT uses very high temperature

Step 4: Evaluating options.

• 65°C for 30 min → Correct batch method
• Others → Either too high or incorrect duration

Step 5: Conclusion.
Thus, correct combination is 65°C for not less than 30 minutes.