Food database · Protein supplements
Protein content
17.8 g of protein in 1 oz (28 g) of soy protein concentrate, or 19.4 g for every 100 kcal it supplies.
Share of this food's calories that come from protein - it is extremely protein-dense.
| Protein per 100 kcal | 19.4 g |
|---|---|
| Protein per 100 g | 63.6 g |
| Protein per serving | 17.8 g in 1 oz (28 g) |
| Calories from protein | 78% |
| Leucine per serving | 1.38 g |
| Rank in protein supplements, per 100 kcal | 5th of 11 |
| Rank of all foods, per 100 g | 5th of 796 |
| Share of 50 g Daily Value | 36% per serving |
| Protein quality | Complete protein |
One 1 oz, 17.8 g protein.
Every 100 kcal of soy protein concentrate brings 19.4 g of protein. On that measure it ranks 5th of the 11 protein supplements in this database and 61st of all 796 foods on the site. Measured by weight instead, its 63.6 g per 100 g ranks 5th in its group.
About 78% of the calories in soy protein concentrate come from protein, which makes it extremely protein-dense - close to the practical ceiling for a whole food. Foods in this band are the ones that let you raise your protein intake without raising your calorie intake much at all.
USDA lists 0.46 g of fat per 100 g of soy protein concentrate, too little for a protein-to-fat ratio to mean much.
Set against protein bar, another protein supplement entry in the database, a serving carries about 1.7 g more protein (protein bar has 16.1 g per 1 bar).
It is a complete protein - it supplies all nine essential amino acids in adequate amounts, so it can carry a meal's protein on its own. The serving quoted here is measured by weight at 28 g, and it covers about 36% of the 50 g FDA Daily Value for protein.
Serving sizes
| Portion | Weight | Protein | Calories |
|---|---|---|---|
| 100 g | 100 g | 63.6 g | 328 kcal |
| 1 oz (serving used here) | 28 g | 17.8 g | 92 kcal |
The USDA record lists no other household measure for this food; protein and calories scale from the per-100 g figures.
Amino acids
| Amino acid | Per 100 g | Per serving | mg per g protein |
|---|---|---|---|
| leucine | 4.92 g | 1.38 g | 77 |
| lysine | 3.93 g | 1.1 g | 62 |
| valine | 3.06 g | 0.86 g | 48 |
| isoleucine | 2.94 g | 0.82 g | 46 |
| threonine | 2.47 g | 0.69 g | 39 |
| phenylalanine | 3.28 g | 0.92 g | 52 |
| methionine | 0.814 g | 0.23 g | 13 |
| histidine | 1.58 g | 0.44 g | 25 |
| tryptophan | 0.835 g | 0.23 g | 13 |
Per-100 g values are the amino acid analysis on the USDA record. The serving and per-gram-of-protein columns are arithmetic on those values; they are not a protein quality score.
Related
Highest-protein protein supplements per serving · Most protein-dense foods · Highest protein per 100 g
Head to head
Quick answers
63.6 g. The 1 oz serving used on this page weighs 28 g and so carries 17.8 g.
19.4 g. That figure divides its 63.6 g of protein per 100 g by its 328 kcal per 100 g, so it does not depend on serving size.
Yes. The protein in soy protein concentrate supplies all nine essential amino acids in adequate amounts, so it can carry a meal's protein on its own.
About 36%. One 1 oz serving has 17.8 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #172447 (Soy protein concentrate, produced by alcohol extraction), SR Legacy data. USDA data is in the public domain. Values are the published reference figures for that record, not lab measurements for a specific brand or batch.