Figure 1.
Summary and comparison of the protein digestibility-corrected amino acid score (PDCAAS) (A) and the digestible indispensable amino acid score (DIAAS) (B). Asterisks represent protein content claims. The US regulations specify that the amino-acid requirements of preschool children aged 2–5 years, as outlined in the 1991 FAO report, “Protein Quality Evaluation: Report of Joint FAO/WHO Expert Consultation,”4 be used as the reference pattern.2Abbreviations: Cys, cysteine; DIAAS, digestible indispensable amino acid score; IAA, indispensable amino acid; Lys, lysine; Met, methionine; PDCAAS, protein digestibility-corrected amino acid score; Thr, threonine; Trp, tryptophan. Data for PDCAAS from the Food and Agriculture Organization of the United Nations/World Health Organization4; data for DIAAS from the Food and Agriculture Organization of the United Nations.6,7