Question

Statement I: The heat stability of concentrated milk decreases considerably upon preheating of milk.
Statement II: During preheating, most serum proteins are denatured and in the acid pH range they strongly aggregate thereby no age gelation occurs.
In light of the above statements, choose the most appropriate answer from the options given below:

• A. Both Statement I and Statement II are correct
• B. Both Statement I and Statement II are incorrect
• C. Statement I is correct but Statement II is incorrect
• D. Statement I is incorrect but Statement II is correct

Hint:

Preheating: decreases heat stability.
Serum proteins: denature but may not prevent gelation.
Age gelation can still occur.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Heat stability of milk is affected by preheating.
Serum proteins play a role in this process.
Step 2: Key Formula or Approach:
No specific formula.
Need to understand heat stability of milk.
Step 3: Detailed Explanation:
Statement I: Heat stability of concentrated milk decreases upon preheating - true.
Statement II: Denaturation of serum proteins prevents age gelation - false.
Age gelation can occur even with denatured proteins.
Thus, Statement I is true, but Statement II is false.
Step 4: Final Answer:
Statement I is correct but Statement II is incorrect.
Hence, the correct option is (C). \bigskip