Ingredient
Why Soy Protein Isolate is Bad for You
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Soy protein isolate is a highly refined form of soy protein, produced by removing most of the fat and carbohydrates from defatted soybean flakes. The result is a powder that is at least 90% protein by weight. It has a neutral flavor and excellent functional properties.
Why it’s in your food
The manufacturer’s reason.
It is widely used by food manufacturers to boost the protein content of various products, improve texture, and act as an emulsifier or stabilizer. You'll find it in protein bars, shakes, meat alternatives, and some baked goods.
Community scan data
How it shows up in the wild.
Found in 1 productwe’ve analyzed.
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Caution
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Where to find it
Products containing Soy Protein Isolate.
1 product in our database.
FAQ
Frequently asked questions.
How is soy protein isolate produced?▾
Production involves taking defatted soybean flakes, extracting the protein using an alkaline water solution, and then precipitating the protein by adjusting the pH. The resulting protein curd is washed, neutralized, and spray-dried into a fine powder, removing most non-protein components.
What kinds of products contain soy protein isolate?▾
Soy protein isolate is common in a wide array of processed foods. This includes protein powders and shakes, nutrition bars, vegetarian and vegan meat substitutes, certain dairy-free products, and sometimes even in baked goods and processed cereals to enhance their protein content.
Would this ingredient be found in a traditional Italian kitchen?▾
Absolutely not. Soy protein isolate is a highly processed, industrial ingredient designed for specific functional purposes in food manufacturing. A traditional Italian kitchen would not use isolated proteins; instead, Nonna would use whole ingredients like beans, eggs, and cheese for protein.
Check your own pantry.
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