# What is Soy Protein Isolate?

> Soy protein isolate is a plant protein made from defatted soybeans that contains about 90% protein and provides all nine essential amino acids in useful...

- **URL**: https://www.best-proteinpowder.com/glossary/soy-protein-isolate/
- **Publisher**: [Best Protein Powder](https://www.best-proteinpowder.com/)

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Soy protein isolate is a plant protein made from defatted soybeans that contains about 90% protein and provides all nine essential amino acids in useful amounts.