Among dietary protein sources, which has the highest biological value?

• A Wheat gluten
• B Cow milk
• C Soya bean
• D Whole egg ✓

Explanation

Biological value measures the proportion of absorbed nitrogen retained in the body, and whole egg protein is conventionally assigned the reference value of approximately 94 to 100. Milk scores around 84 to 90, soya around 74, while wheat gluten is deficient in lysine and scores below 55. Egg protein provides an amino acid profile closest to human requirements, which is why it serves as the reference protein in nutritional biochemistry and in calculation of amino acid scores.

Reference: Harper's Illustrated Biochemistry, 32nd ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.