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What is soy protein isolate?

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Quick Answer

Soy protein isolate is mostly soybean protein that food producers separate for use as a dry powder ingredient, according to the Soyfoods Association of North America. Producers remove the fat from soybean flakes and wash them in alcohol or water to remove sugars and fiber.

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Full Answer

One ounce of soy protein isolate powder contains 96 calories from 1 gram of fat, 2 grams of carbohydrates and 23 grams of protein, explains the Soyfoods Association of North America. It is a common ingredient in beverages and foods such as power bars, meat analogs, baked goods, cereals and muscle-gain products. Consumers can also purchase soy protein isolate powder by itself for use in shakes, smoothies or other meals.

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