Question:
The purpose of the heat treatment of milk is exclusively to destroy pathogenic bacteria to make the milk safe for human consumption.
A. Milk is pasteurized at 72°C for 15 seconds to destroy the pathogenic organisms.
B. The most resistant pathogenic bacteria is Coxiella burnetii.
C. The temperature-time combination for destruction of pathogenic bacteria is based on Bacillus subtilis.
D. The temperature-time combination of 63°C for 30 minutes can also be employed for pasteurization of milk.
Choose the correct statements about heat treatment of milk from the options given below:
The purpose of the heat treatment of milk is exclusively to destroy pathogenic bacteria to make the milk safe for human consumption.
A. Milk is pasteurized at 72°C for 15 seconds to destroy the pathogenic organisms.
B. The most resistant pathogenic bacteria is Coxiella burnetii.
C. The temperature-time combination for destruction of pathogenic bacteria is based on Bacillus subtilis.
D. The temperature-time combination of 63°C for 30 minutes can also be employed for pasteurization of milk.
Choose the correct statements about heat treatment of milk from the options given below:
A. Milk is pasteurized at 72°C for 15 seconds to destroy the pathogenic organisms.
B. The most resistant pathogenic bacteria is Coxiella burnetii.
C. The temperature-time combination for destruction of pathogenic bacteria is based on Bacillus subtilis.
D. The temperature-time combination of 63°C for 30 minutes can also be employed for pasteurization of milk.
Choose the correct statements about heat treatment of milk from the options given below:
Show Hint
Pasteurization: HTST (72°C/15s) and LTLT (63°C/30min).
Coxiella burnetii is the most heat-resistant pathogen in milk.
Coxiella burnetii is the most heat-resistant pathogen in milk.
Updated On: Aug 18, 2026
- (A), (B), (C) only
- (B), (C), (D) only
- (A), (C), (D) only
- (A), (B), (D) only
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Pasteurization is a heat treatment process designed to kill pathogenic microorganisms in milk.
Different time-temperature combinations are used for pasteurization.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the basics of milk pasteurization.
Step 3: Detailed Explanation:
Statement A: Milk is pasteurized at 72°C for 15 seconds (HTST) - correct.
Statement B: Coxiella burnetii is the most heat-resistant pathogenic bacteria - correct.
Statement C: The temperature-time combination is based on Coxiella burnetii, not Bacillus subtilis - incorrect.
Statement D: 63°C for 30 minutes (LTLT) is also a valid pasteurization method - correct.
Thus, A, B, and D are correct.
Step 4: Final Answer:
The correct statements are (A), (B), and (D).
Hence, the correct option is (D).
Pasteurization is a heat treatment process designed to kill pathogenic microorganisms in milk.
Different time-temperature combinations are used for pasteurization.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the basics of milk pasteurization.
Step 3: Detailed Explanation:
Statement A: Milk is pasteurized at 72°C for 15 seconds (HTST) - correct.
Statement B: Coxiella burnetii is the most heat-resistant pathogenic bacteria - correct.
Statement C: The temperature-time combination is based on Coxiella burnetii, not Bacillus subtilis - incorrect.
Statement D: 63°C for 30 minutes (LTLT) is also a valid pasteurization method - correct.
Thus, A, B, and D are correct.
Step 4: Final Answer:
The correct statements are (A), (B), and (D).
Hence, the correct option is (D).
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