Soy protein isolate

Soy protein isolate, produced from dehulled, defatted soybean flakes, contains 90%-95% protein and is the purest form of marketed soybean protein. Soy protein is an excellent source of essential amino acids, comparable to cow’s milk. Isolated soy protein is commonly added to meat, dairy and infant foods to enhance their protein content 1.

This ingredient can be found in the following products in United States:


  1. Ensminger AH, Ensminger ME, Konlande JE, Robson JRK. The Concise Encyclopedia of Foods and Nutrition. Boca Raton, Florida: CRC Press, 1995.