Question:easy
The holder (low-temperature) method of pasteurization of milk is done at:
The holder (low-temperature) method of pasteurization of milk is done at:
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Holder method = low temperature, long time.
Updated On: Jun 23, 2026
- 73 degrees C for 20 min
- 63 degrees C for 30 min
- 72 degrees C for 30 seconds
- 63 degrees C for 30 seconds
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The Correct Option is B
Solution and Explanation
Step 1: Two classic pasteurization schedules must be recalled. The holder method (LTLT) pairs a low temperature with a long time; the flash method (HTST) pairs a high temperature with a short time. Step 2: For the holder method the figures are 63 degrees C (about 145 degrees F) maintained for 30 minutes, which directly matches option B. Step 3: For the flash/HTST method the figures are 72 degrees C (about 162 degrees F) for 15 seconds; ultra-high-temperature processing goes higher for even shorter times. Step 4: Comparing each option, 63 degrees C for 30 minutes is the only one that reproduces a recognised standard, so it is correct. \[\boxed{63\ ^{\circ}\text{C for 30 minutes}}\]
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