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Egg White Nutrition: High-Quality Protein, Low Calorie, Versatile Benefits

Egg Whites: Pure Protein Package

One large egg white (33g): 17 kcal, 3.6g protein, 0g fat, 0g cholesterol, 55mg sodium.

Key Nutritional Highlights

  • Complete protein: All 9 essential amino acids; high PDCAAS (1.0) & biological value (100).
  • Albumin (ovalbumin 54%, conalbumin, ovomucoid, etc.): Functional properties – foaming, gelling, emulsifying.
  • Micronutrients: Riboflavin (B2), selenium, potassium, magnesium; no B12, choline, fat-soluble vitamins (those are in yolk).
  • Low phosphorus vs. whole egg – relevant for CKD diets.

Health Benefits

  • Muscle protein synthesis (leucine-rich).
  • Satiety → weight management.
  • Blood pressure modulation (peptides from ovalbumin hydrolysis – ACE inhibitory).
  • Antioxidant (selenium, ovotransferrin).

Allergy Note

Most egg allergy is to ovomucoid/ovalbumin in whites (heat-labile but not destroyed by cooking). Some tolerate baked egg (extensive heating). Consult allergist before introducing.

Culinary Versatility

  • Meringues, soufflés, macarons (foam stability).
  • Binding (meatballs, veggie burgers).
  • Clarifying broths (consommé).
  • Low-fat omelets, scrambles, protein boost in oats/smoothies.
  • Vegan substitute: aquafaba (chickpea liquid) mimics foam.

Safety

  • Pasteurized liquid egg whites eliminate Salmonella risk for raw use (mousse, shakes).
  • Raw whites contain avidin → binds biotin (negligible if cooked or moderate intake).

Egg whites are a concentrated, versatile, high-quality protein source—ideal for athletes, weight management, and therapeutic diets.

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