Food manufacturers use soy protein isolates in infant formula, nutritional supplements, meat and dairy products, and meat analogs. Soy protein isolates do not alter the flavor of foods. Where to Buy Soy Protein Isolate Soy protein isolates can be bought at most health food stores.
Some brands offer additional vitamin and mineral fortification.
They are low in fat, calories and cholesterol. Add soy protein isolates to milk shakes or smoothies for an added protein boost. Add soy protein isolates to orange juice. Sprinkle soy protein isolates on cereal to add nutritional value.