Question

Whey protein containing essential amino acid ?

• A. 51%
• B. 21%
• C. 31%
• D. 11%

Hint:

Whey protein is called a “complete protein” because of its high essential amino acid content.

Answer 1

The Correct Option is A

Concept: Whey proteins are considered high-quality proteins because they contain a high proportion of essential amino acids, which the human body cannot synthesize and must obtain from diet.

Step 1: Understanding whey protein composition.
Whey protein includes:
• $\beta$-lactoglobulin
• $\alpha$-lactalbumin
• Serum albumin
• Immunoglobulins

Step 2: Essential amino acids.
Essential amino acids include:
• Leucine, Isoleucine, Valine
• Lysine, Methionine
• Phenylalanine, Threonine, Tryptophan, etc.

Step 3: Proportion in whey protein.
Whey protein contains approximately 50–51% essential amino acids, which makes it superior in nutritional quality compared to many plant proteins.

Step 4: Evaluating options.

• 51% → Matches scientific data
• 21%, 31%, 11% → Too low for whey protein

Step 5: Conclusion.
Thus, whey protein contains approximately 51% essential amino acids.