Table 3.

Food groups contributing to the essential amino acid intake.

Amino Acids	Contribution (%)	Intake (g/day)	Food Groups
Histidine	25.5	0.38 ± 0.2	Grain and grain products
	17.8	0.54 ± 0.6	Meat and meat products
	17.3	0.34 ± 0.6	Fish and shellfish
	13.0	0.19 ± 0.1	Vegetables
	6.5	0.14 ± 0.2	Legumes and legume products
Isoleucine	43.9	1.03 ± 0.5	Grain and grain products
	14.2	0.44 ± 0.9	Fish and shellfish
	12.8	0.62 ± 0.7	Meat and meat products
	8.1	0.28 ± 0.3	Legumes and legume products
	7.0	0.16 ± 0.1	Vegetables
Leucine	44.2	1.74 ± 0.7	Grain and grain products
	14.5	0.76 ± 1.6	Fish and shellfish
	13.7	1.11 ± 1.3	Meat and meat products
	8.7	0.50 ± 0.5	Legumes and legume products
	6.2	0.24 ± 0.2	Vegetables
Lysine	27.7	0.75 ± 1.3	Fish and shellfish
	25.6	1.08 ± 1.2	Meat and meat products
	13.1	0.27 ± 0.2	Grain and grain products
	11.7	0.35 ± 0.4	Legumes and legume products
	7.1	0.14 ± 0.1	Vegetables
Methionine	31.0	0.27 ± 0.1	Grain and grain products
	24.8	0.29 ± 0.5	Fish and shellfish
	18.1	0.32 ± 0.4	Meat and meat products
	5.3	0.07 ± 0.1	Legumes and legume products
	5.2	0.04 ± 0.1	Vegetables
Phenylalanine	44.8	1.00 ± 0.4	Grain and grain products
	13.1	0.39 ± 0.8	Fish and shellfish
	12.2	0.56 ± 0.6	Meat and meat products
	9.6	0.31 ± 0.3	Legumes and legume products
	7.0	0.16 ± 0.1	Vegetables
Threonine	21.2	0.41 ± 0.7	Fish and shellfish
	20.8	0.30 ± 0.2	Grain and grain products
	20.0	0.59 ± 0.7	Meat and meat products
	12.3	0.26 ± 0.3	Legumes and legume products
	9.2	0.13 ± 0.1	Vegetables
Tryptophan	26.4	0.12 ± 0.1	Grain and grain products
	19.6	0.12 ± 0.2	Fish and shellfish
	14.0	0.15 ± 0.2	Meat and meat products
	11.5	0.08 ± 0.1	Legumes and legume products
	9.8	0.04 ± 0.1	Vegetables
Valine	50.8	1.60 ± 0.7	Grain and grain products
	11.5	0.48 ± 0.9	Fish and shellfish
	11.0	0.72 ± 0.8	Meat and meat products
	7.5	0.23 ± 0.2	Vegetables
	6.4	0.30 ± 0.4	Legumes and legume products

Mean ± standard deviation.