Question:

Which one of the following proteins are present in Egg?

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Food Protein Sources:
Egg $\rightarrow$ Ovalbumin Conalbumin.
Milk $\rightarrow$ Casein Lactalbumin.
Maize $\rightarrow$ Zein.
Wheat $\rightarrow$ Gluten (Gliadin + Glutenin).
  • Casein
  • Zein
  • Gluten
  • Albumin
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The Correct Option is D

Solution and Explanation


Step 1: Understanding the Concept:

Proteins in foods are categorized based on their biological source and solubility characteristics.

Step 2: Detailed Explanation:

Analyzing the protein sources:
1. Albumin (Ovalbumin): The major globular protein found in egg white (constituting $\approx 54\%$ of total egg white protein), known for its complete essential amino acid profile and highest Biological Value ($BV \approx 100$).
2. Casein: Major phosphoprotein of milk.
3. Zein: Prolamine storage protein of maize.
4. Gluten: Viscoelastic storage protein complex of wheat.

Step 3: Final Answer:

Therefore, Albumin is present in Egg, corresponding to option (D).
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