. 2021 Nov 29;8:774203. doi: 10.3389/fnut.2021.774203

Table 3.

The amino acid score (AAS) of dietary ingredients.

AAS (for infants/preschool children 2 yrs)	FAO (2013)	Soy protein	Casein
Threonine	31	94.2 ± 1.00^b	110.2 ± 5.59a
Methionine+Cystine	27	71.5 ± 2.13^b	155.8 ± 2.97^a
Isoleucine	32	119.2 ± 1.15^b	142.7 ± 1.08^a
Leucine	66	93.9 ± 0.51^b	118.1 ± 0.52^a
Phenylalanine+Tyrosine	52	130.5 ± 0.62^b	172.9 ± 1.51^a
Lysine	57	87.4 ± 1.09^b	121.0 ± 0.56^a
Histidine	20	103.1 ± 2.13^b	124.8 ± 1.86^a
Tryptophan	9	93.4 ± 3.47^b	120.3 ± 3.13^a
Valine	43	91.0 ± 0.96^b	132.5 ± 0.78^a

Data are presented as the mean ± SD (n = 3). The letters after the data indicate the statistical difference (p < 0.05).