Milk can be pasteurized by
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Correct Answer: Option C
Explanation:
The correct answer is C: heating to 75°C for 20 minutes.
Pasteurization is a heat treatment process used to kill harmful microorganisms in milk without significantly affecting its quality. Typically, milk is pasteurized by heating it to about 75°C for 15-20 minutes or using a faster method like high-temperature short time (HTST) pasteurization, where milk is heated to 72°C for 15 seconds.
- A: The addition of common salt does not pasteurize milk.
- B: Boiling milk for one hour would be excessive for pasteurization and may negatively affect its taste and quality.
- D: The addition of vinegar is used to curdle milk, not pasteurize it.
- E: Heating milk to 100°C for 12 hours is too long and could degrade the milk's quality.
Therefore, C: heating to 75°C for 20 minutes is the correct method of pasteurization.
The correct answer is C: heating to 75°C for 20 minutes.
Pasteurization is a heat treatment process used to kill harmful microorganisms in milk without significantly affecting its quality. Typically, milk is pasteurized by heating it to about 75°C for 15-20 minutes or using a faster method like high-temperature short time (HTST) pasteurization, where milk is heated to 72°C for 15 seconds.
- A: The addition of common salt does not pasteurize milk.
- B: Boiling milk for one hour would be excessive for pasteurization and may negatively affect its taste and quality.
- D: The addition of vinegar is used to curdle milk, not pasteurize it.
- E: Heating milk to 100°C for 12 hours is too long and could degrade the milk's quality.
Therefore, C: heating to 75°C for 20 minutes is the correct method of pasteurization.