Soy Protein Isolate
SR Legacy·Comprehensive Reference DataStandard Reference Legacy database is a comprehensive compilation of nutrient data maintained by the USDA. It covers a wide range of foods with reliable reference values.Soy protein isolate
Legumes and Legume Products
A 100g serving covers 178% of the daily recommended Copper, making Soy Protein Isolate one of the more concentrated dietary sources of this nutrient. Soy Protein Isolate stands out for its lean protein profile — 88.3g of protein with only 3.4g of fat per 100g. Soy Protein Isolate packs 335 calories per 100g, placing it on the energy-dense side — a small serving goes a long way. Sodium is notably high at 1005mg per 100g (44% DV), relevant for anyone on a low-sodium or DASH diet. Nutritionally broad, Soy Protein Isolate delivers meaningful amounts of 11 different vitamins and minerals above 10% of daily value.
Calorie Distribution
- Protein92%88.3 g
- Fat8%3.4 g
- Carbs0%0 g
Serving Size
% Daily Value
per 100g serving · FDA 2020 reference
Nutrition Facts per 100g
| Water | 5.0 | G |
| Energy | 335 | KCAL |
| Protein | 88.3 | G |
| Total lipid (fat) | 3.4 | G |
| Carbohydrate, by difference | 0 | G |
| Fiber, total dietary | 0 | G |
| Total Sugars | 0 | G |
| Cholesterol | 0 | MG |
| Vitamin C, total ascorbic acid | 0 | MG |
| Thiamin | 0.18 | MG |
| Riboflavin | 0.10 | MG |
| Niacin | 1.4 | MG |
| Vitamin B-6 | 0.10 | MG |
| Folate, total | 176 | UG |
| Vitamin B-12 | 0 | UG |
| Vitamin A, RAE | 0 | UG |
| Vitamin E (alpha-tocopherol) | 0 | MG |
| Vitamin D (D2 + D3) | 0 | UG |
| Vitamin K (phylloquinone) | 0 | UG |
| Calcium, Ca | 178 | MG |
| Iron, Fe | 14.5 | MG |
| Magnesium, Mg | 39.0 | MG |
| Phosphorus, P | 776 | MG |
| Potassium, K | 81.0 | MG |
| Sodium, Na | 1005 | MG |
| Zinc, Zn | 4.0 | MG |
| Copper, Cu | 1.6 | MG |
| Manganese, Mn | 1.5 | MG |
| Selenium, Se | 0.80 | UG |
| Energy | 1401 | kJ |
| Ash | 3.6 | G |
| Pantothenic acid | 0.06 | MG |
| Folic acid | 0 | UG |
| Folate, food | 176 | UG |
| Folate, DFE | 176 | UG |
| Choline, total | 191 | MG |
| Vitamin B-12, added | 0 | UG |
| Retinol | 0 | UG |
| Carotene, beta | 0 | UG |
| Carotene, alpha | 0 | UG |
| Cryptoxanthin, beta | 0 | UG |
| Vitamin A, IU | 0 | IU |
| Lycopene | 0 | UG |
| Lutein + zeaxanthin | 0 | UG |
| Vitamin E, added | 0 | MG |
| Vitamin D (D2 + D3), International Units | 0 | IU |
| Fatty acids, total saturated | 0.42 | G |
| SFA 4:0 | 0 | G |
| SFA 6:0 | 0 | G |
| SFA 8:0 | 0 | G |
| SFA 10:0 | 0 | G |
| SFA 12:0 | 0 | G |
| SFA 14:0 | 0.008 | G |
| SFA 16:0 | 0.31 | G |
| SFA 18:0 | 0.10 | G |
| Fatty acids, total monounsaturated | 0.65 | G |
| MUFA 16:1 | 0.008 | G |
| MUFA 18:1 | 0.64 | G |
| MUFA 20:1 | 0 | G |
| MUFA 22:1 | 0 | G |
| Fatty acids, total polyunsaturated | 1.6 | G |
| PUFA 18:2 | 1.5 | G |
| PUFA 18:3 | 0.20 | G |
| PUFA 18:4 | 0 | G |
| PUFA 20:4 | 0 | G |
| PUFA 20:5 n-3 (EPA) | 0 | G |
| PUFA 22:5 n-3 (DPA) | 0 | G |
| PUFA 22:6 n-3 (DHA) | 0 | G |
| Fatty acids, total trans | 0 | G |
| Tryptophan | 1.1 | G |
| Threonine | 3.1 | G |
| Isoleucine | 4.3 | G |
| Leucine | 6.8 | G |
| Lysine | 5.3 | G |
| Methionine | 1.1 | G |
| Cystine | 1.0 | G |
| Phenylalanine | 4.6 | G |
| Tyrosine | 3.2 | G |
| Valine | 4.1 | G |
| Arginine | 6.7 | G |
| Histidine | 2.3 | G |
| Alanine | 3.6 | G |
| Aspartic acid | 10.2 | G |
| Glutamic acid | 17.5 | G |
| Glycine | 3.6 | G |
| Proline | 5.0 | G |
| Serine | 4.6 | G |
| Alcohol, ethyl | 0 | G |
| Caffeine | 0 | MG |
| Theobromine | 0 | MG |
Common Serving Sizes
| Serving | Cal | Protein | Fat | Carbs |
|---|---|---|---|---|
| oz (28.35g) | 95 | 25g | 1g | 0g |
Scaled from Soy Protein Isolate's per-100g values using USDA portion data.
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Nutrient Highlights
- Soy Protein Isolate is a excellent source of Protein (177% DV) — see top foods ranked by Protein
- Soy Protein Isolate is a excellent source of Iron (81% DV) — see top foods ranked by Iron
- Soy Protein Isolate is a excellent source of Sodium (44% DV) — see top foods ranked by Sodium
- Soy Protein Isolate is a excellent source of Zinc (37% DV) — see top foods ranked by Zinc
- Soy Protein Isolate is a good source of Calcium (14% DV) — see top foods ranked by Calcium
Dietary Considerations
At 1005mg of sodium per 100g, Soy Protein Isolate should be consumed mindfully on a DASH or low-sodium diet. See the DASH Diet Guide.
Soy Protein Isolate fits well in high-protein, low-carb eating patterns with 88.3g protein and only 0.0g carbs per 100g. See the High-Protein, Low-Carb Guide.
Soy Protein Isolate provides 14.5mg of iron per 100g, relevant for managing iron deficiency. See the Iron Deficiency & Anemia Guide.
Soy Protein Isolate is a meaningful source of folate at 176mcg per 100g, important during pregnancy. See the Pregnancy Nutrition Guide.
Rankings Among 8,262 USDA Foods
- Protein: top <1% (#1 of 8,262)
- Iron: top 2% (#165 of 8,262)
- Sodium: top 5% (#413 of 8,262)
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Nutrition Facts
Serving Size 100g
* The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
Data Source
Data sourced from USDA FoodData Central — SR Legacy. FDC ID: 174276.
View on USDA FoodData Central →