Table 1.

Dietary essential amino acid (EAA) content and ratios.

mg/g protein	Rat EAA req*	7% casein					20% casein
		0	1.5% Lys	3% Lys	6% Lys	6%Lys + 3%Arg	0	1.5% Lys	3% Lys	6% Lys	6%Lys + 3%Arg
Arginine	29	32.2	25.8	22.5	15.7	151.7	34.3	31.3	29.9	24.4	107.7
Histidine	19	29.0	23.3	20.4	14.1	10.1	27.6	25.3	23.9	19.7	16.9
Isoleucine	41	51.5	41.8	36.5	25.1	18.0	49.5	45.1	42.4	35.0	29.9
Leucine	71	98.2	78.6	66.5	47.1	34.0	92.3	84.3	79.7	65.7	55.8
Lysine	61	83.7	199.0	289.7	371.0	255.2	78.8	126.5	170.3	225.0	191.1
Met + Cys	65	46.7	38.1	31.1	20.4	14.9	45.1	41.2	37.8	29.9	25.6
Phe + Tyr	68	80.5	65.1	56.9	39.2	28.6	95.7	85.8	82.4	68.5	58.1
Threonine	41	43.5	34.4	29.0	20.4	14.3	46.2	37.2	35.0	28.7	24.3
Tryptophan	13	14.5	9.8	9.7	6.3	5.3	15.2	11.4	11.0	10.6	8.1
Valine	49	66.0	52.8	45.1	31.4	22.8	62.5	57.5	53.9	44.5	37.6
EAA scores
Arginine		1.11	0.89	0.78	0.54	5.23	1.18	1.08	1.03	0.84	3.71
Histidine		1.55	1.25	1.09	0.76	0.54	1.48	1.36	1.28	1.05	0.90
Isoleucine		1.25	1.01	0.88	0.61	0.44	1.20	1.09	1.02	0.85	0.72
Leucine		1.38	1.10	0.93	0.66	0.48	1.29	1.18	1.12	0.92	0.78
Lysine		1.37	3.24	4.72	6.05	4.16	1.29	2.06	2.78	3.67	3.12
Met + Cys		0.71	0.58 (− 18%)**	0.48 (− 32%)	0.31 (− 56%)	0.23 (− 68%)	0.69	0.63 (− 9%)	0.58 (− 16%)	0.46 (− 33%)	0.39 (− 43%)
Phe + Tyr		1.18	0.96	0.84	0.58	0.42	1.41	1.26	1.21	1.01	0.85
Threonine		1.05	0.83	0.70	0.49	0.35	1.12	0.90	0.85	0.69	0.59
Tryptophan		1.11	0.76	0.74	0.48	0.41	1.17	0.88	0.85	0.82	0.62
Valine		1.34	1.07	0.91	0.64	0.46	1.27	1.17	1.09	0.90	0.76

*Rat EAA requirement³⁰.

**Percentage reduction of the limiting EAA scores compared to respective Control.