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Table 1 Approximate Essential Amino Acid Profile of Various Protein Sources

From: Effect of protein/essential amino acids and resistance training on skeletal muscle hypertrophy: A case for whey protein

ESSENTIAL AMINO ACID MILK PROTEIN ISOLATE WHEY PROTEIN ISOLATE WHEY PROTEIN HYDROL. CASEIN SOY PROTEIN ISOLATE EGG PROTEIN
Isoleucine 4.4 6.1 5.5 4.7 4.9 5.7
Leucine 10.3 12.2 14.2 8.9 8.2 8.4
Lysine 8.1 10.2 10.2 7.6 6.3 6.8
Methionine 3.3 3.3 2.4 3.0 1.3 3.4
Phenylalanine 5.0 3.0 3.8 5.1 5.2 5.8
Threonine 4.5 6.8 5.5 4.4 3.8 4.6
Tryptophan 1.4 1.8 2.3 1.2 1.3 1.2
Valine 5.7 5.9 5.9 5.9 5.0 6.4
Total BCAAs 20.4 24.2 25.6 19.5 18.1 20.4
Total EAAs 42.7 49.2 49.8 40.7 36.0 42.3
  1. Approximate concentration of essential and branched chain amino acids (EAA and BCAA, respectively) present within various forms of commercially available protein (g/100 g). Adapted from [27]. Casein is the average of reported values for Calcium Caseinate, Sodium Caseinate, and Potassium Caseinate; Whey Protein Isolate is the average of reported values for Ion-Exchange and Cross-Flow Microfiltrated Whey Protein Isolates. Hydrol. is hydrolysate.