Food guide

Soy Protein Isolate

Almost pure soy protein used to fortify foods and shakes, with little carbohydrate or fat.

Protein-RichPlant-Based

Soy Protein Isolate, a nutrient-dense protein-rich food, photographed on a plain linen surface

Nutrition per 100 g

Standardised to 100 g of soy protein isolate for fair comparison. Typical serving: 30 g powder — 101 kcal per 30 g serving.

Nutrition information for Soy Protein Isolate
Nutrient	Per 100 g	Per serving (30 g)	Per 100 kcal
Energy	337 kcal	101 kcal	100 kcal
Protein	88.3 g	26.5 g	26.2 g
Carbohydrate	0 g	0 g	0 g
Fat	3.3 g	1 g	1 g
Fibre	0 g	0 g	0 g

Figures are typical values and vary with variety, preparation and brand.

Micronutrients

Vitamins and minerals per 100 g of soy protein isolate, with a typical serving and FDA Daily Value for adults.

Micronutrients for Soy Protein Isolate
Nutrient	Per 100 g	Per serving (30 g)	% DV
Vitamins
Vitamin A	0 µg	0 µg	0%
Vitamin C	0 mg	0 mg	0%
Vitamin D	0 µg	0 µg	0%
Vitamin E	0 mg	0 mg	0%
Vitamin K	0 µg	0 µg	0%
Thiamin	0.18 mg	0.054 mg	15%
Riboflavin	0.1 mg	0.03 mg	8%
Niacin	1.4 mg	0.42 mg	9%
Vitamin B6	0.1 mg	0.03 mg	6%
Folate	176 µg	52.8 µg	44%
Vitamin B12	0 µg	0 µg	0%
Pantothenic acid	0.06 mg	0.018 mg	1%
Choline	191 mg	57.3 mg	35%
Minerals
Calcium	178 mg	53.4 mg	14%
Iron	14.5 mg	4.4 mg	81%
Magnesium	39 mg	11.7 mg	9%
Phosphorus	776 mg	233 mg	62%
Potassium	81 mg	24.3 mg	2%
Sodium	1005 mg	302 mg	44%
Zinc	4 mg	1.2 mg	36%
Selenium	0.8 µg	0.24 µg	1%
Copper	1.6 mg	0.48 mg	178%
Manganese	1.5 mg	0.45 mg	65%

Source: USDA FoodData Central — Soy protein isolate

% DV uses FDA Daily Values for adults. Nutrients that USDA does not report for this entry are omitted. Values vary with variety, preparation and brand.

Why eat soy protein isolate?

A concentrated protein food for the calories it costs.
Almost pure soy protein used to fortify foods and shakes, with little carbohydrate or fat.

How to include it

Use in the usual way for this food, and keep an eye on the stated serving.
Typical pairing ideas: Smoothies, Oats, Banana.

Things to consider

Preparation and added fat, salt or sugar change the numbers more than the raw food does.

Educational content. This article is for general information and is not medical advice. Speak to a qualified health professional about your individual circumstances.