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Table 1 Dietary IAA reference ratios for minimal IAA and DIAAS per protein diet

From: No protein intake compensation for insufficient indispensable amino acid intake with a low-protein diet for 12 days

  His Ile Leu Lys SAA AAA Thr Val Trp DIAAS
           % (IAA)
5En% wheat 1.26 1.06 1.05 0.53 1.68 1.36 1.00 0.94 1.62 53 (Lys)
5En% wheat + 10En%:           
  Whey + α-lac 1.19 1.63 1.45 1.47 2.00 1.50 1.90 1.13 3.06 113 (Val)
  Soy 1.29 1.14 1.00 0.84 1.09 1.01 1.10 0.89 1.54 84 (Lys)
  Beef 1.78 1.38 1.23 1.44 1.65 1.79 1.55 1.12 1.33 112 (Val)
5En% wheat + 25En%:           
  Whey + α-lac 1.17 1.77 1.55 1.69 2.08 1.53 2.12 1.18 3.41 117 (His)
  Soy 1.31 1.18 1.00 0.93 0.96 1.02 1.14 0.89 1.53 89 (Val)
  Beef 1.93 1.47 1.30 1.68 1.66 1.92 1.71 1.18 1.28 118 (Val)
  1. α-lac, α-lactalbumin; AAA, aromatic amino acids (phenylalanine + tyrosine); DIAAS, digestible indispensable amino acid score; En%, percentage of energy; IAA, indispensable amino acid; His, histidine; Ile, isoleucine; Leu, leucine; Lys, lysine; SAA, sulphur amino acids (cysteine + methionine); Thr, threonine; Trp, tryptophan; Val, valine.