Soy protein isolate (USDA): amino acid profile
as sold · USDA SR Legacy, FDC ID 174276 (Legumes and Legume Products)
How much protein and leucine does it contain?
Per 100 g, Soy protein isolate (USDA) provides 88.3 g protein and 6.78 g leucine. Use the listed preparation when comparing portions.
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The first column of amounts is per 100 g of food; the second compares the composition of the protein itself.
| Amino acid | g / 100 g | g / 100 g protein |
|---|---|---|
| Leucine Essential (BCAA) | 6.78 | 7.7 |
| Isoleucine Essential (BCAA) | 4.25 | 4.8 |
| Valine Essential (BCAA) | 4.10 | 4.6 |
| Lysine Essential | 5.33 | 6.0 |
| Threonine Essential | 3.14 | 3.6 |
| Phenylalanine Essential | 4.59 | 5.2 |
| Methionine Essential | 1.13 | 1.3 |
| Histidine Essential | 2.30 | 2.6 |
| Tryptophan Essential | 1.12 | 1.3 |
| Glutamic acid Non-essential | 17.45 | 19.8 |
| Aspartic acid Non-essential | 10.20 | 11.6 |
| Proline Non-essential | 4.96 | 5.6 |
| Alanine Non-essential | 3.59 | 4.1 |
| Serine Non-essential | 4.59 | 5.2 |
| Tyrosine Non-essential | 3.22 | 3.6 |
| Arginine Non-essential | 6.67 | 7.6 |
| Cysteine Non-essential | 1.05 | 1.2 |
| Glycine Non-essential | 3.60 | 4.1 |
What do these numbers mean? Read the guide →
By Logan King and Dr Paul T Morgan, Senior Lecturer in Human Nutrition and Metabolism, Manchester Metropolitan University.
Amino acid score compares this food's scarcest essential amino acid with the WHO/FAO/UNU 2007 adult pattern; 100%+ means every essential amino acid is carried in good proportion. Data: USDA SR Legacy, FDC ID 174276 (Legumes and Legume Products). Educational reference, not medical advice.