Question

Arrange the heat-denatured proteins in decreasing order on the basis of HPN index (% powder).
A. Low heat powder
B. Medium high heat powder
C. Medium heat powder
D. High heat powder

• A. A, B, C, D
• B. A, C, B, D
• C. D, C, B, A
• D. D, B, C, A

Hint:

More heat = more denaturation = lower solubility.

Answer 1

The Correct Option is D

Concept: Heat treatment affects whey protein denaturation. Higher heat → more denaturation → lower solubility.

Step 1: Understanding HPN index.

• Reflects protein denaturation
• Higher heat → higher denaturation

Step 2: Categories.

• High heat powder → maximum denaturation
• Medium-high heat → next
• Medium heat → moderate
• Low heat → least denaturation

Step 3: Decreasing order.
\[ \text{High} > \text{Medium-high} > \text{Medium} > \text{Low} \]

Step 4: Mapping.
\[ D, B, C, A \] Conclusion: Option (4) correct.