SR Legacy

Soy protein isolate

Category: Legumes and Legume Products

Per 1 oz (28.4 g)

95Calories

25 gProtein

0 gCarbs

0.961 gFat

U.S. Nutrition Facts

In the FDA label format, rounded the way a package would be.

Nutrition Facts

Serving size 1 oz (28.4 g)

Amount per serving

Calories 90

% Daily Value*

Total Fat 1g 1%

Saturated Fat 0g 0%

Trans Fat 0g

Cholesterol 0mg 0%

Sodium 280mg 12%

Total Carbohydrate 0g 0%

Dietary Fiber 0g 0%

Total Sugars 0g

Includes – Added Sugars

Protein 25g

Vitamin D 0mcg 0%

Calcium 50mg 4%

Iron 4.1mg 25%

Potassium 25mg 0%

* The % Daily Value (DV) 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.

“–” means the source doesn't report that nutrient.

Nutrient details

Unrounded values, grouped by type. Select a column heading to sort within each group.

See each nutrient as a percentage of what you need in a day, based on your age, sex, size, and activity. Personalize


Energy and macronutrients
Calories	335 kcal	95 kcal
Protein	88 g	25 g
Total Fat	3.4 g	0.961 g
Total Carbohydrate	0 g	0 g
Dietary Fiber	0 g	0 g
Total Sugars	0 g	0 g
Fats and cholesterol
Saturated Fat	0.422 g	0.12 g
Monounsaturated Fat	0.645 g	0.183 g
Polyunsaturated Fat	1.6 g	0.467 g
Trans Fat	0 g	0 g
Cholesterol	0 mg	0 mg
Vitamins
Vitamin A	0 mcg	0 mcg
Vitamin C	0 mg	0 mg
Vitamin D	0 mcg	0 mcg
Vitamin E	0 mg	0 mg
Vitamin K	0 mcg	0 mcg
Thiamin (B1)	0.176 mg	0.05 mg
Riboflavin (B2)	0.1 mg	0.028 mg
Niacin (B3)	1.4 mg	0.408 mg
Vitamin B6	0.1 mg	0.028 mg
Folate	176 mcg	50 mcg
Vitamin B12	0 mcg	0 mcg
Choline	191 mg	54 mg
Minerals
Calcium	178 mg	50 mg
Iron	15 mg	4.1 mg
Magnesium	39 mg	11 mg
Phosphorus	776 mg	220 mg
Potassium	81 mg	23 mg
Sodium	1,005 mg	285 mg
Zinc	4 mg	1.1 mg
Copper	1.6 mg	0.453 mg
Manganese	1.5 mg	0.423 mg
Selenium	0.8 mcg	0.227 mcg
Other
Caffeine	0 mg	0 mg

How the sources were reconciled

Each food has one source of truth, chosen by the rules on the Sources page.

This food is only in SR Legacy, USDA's final Standard Reference release (2018). The values are USDA's published reference values, but they're no longer updated.

Records used

Dataset	Record	Updated	Role
SR Legacy	174276	Apr 1, 2019	Primary source

Citations

USDA FoodData Central – SR Legacy (Standard Reference, final 2018 release)

U.S. Department of Agriculture, Agricultural Research Service. USDA National Nutrient Database for Standard Reference, Legacy Release (SR Legacy), via FoodData Central. "Soy protein isolate," FDC ID 174276, published April 1, 2019.

https://fdc.nal.usda.gov/food-details/174276/nutrients · License: Public domain (CC0 1.0) · Accessed September 19, 2026

Wikimedia Commons

Photo by United Soybean Board, via Wikimedia Commons, licensed under CC BY 2.0.

https://commons.wikimedia.org/wiki/File:Soybean_Pod_(48754451708).jpg · License: CC BY 2.0 · Accessed September 19, 2026

Nutrition information is for general reference and isn't medical or dietary advice. Product formulas change; the label on the package in hand is the final word.