Soy flour, defatted vs Soy protein isolate, potassium type

Soy flour, defatted, and soy protein isolate, potassium type, both score 89 of 100, so scores alone do not separate them. The isolate is far higher in protein, 88.3 g per 100 g against 51.5 g for soy flour, but has zero fiber, while soy flour provides 17.5 g. Soy flour also carries more carbohydrate, 33.9 g versus 2.59 g, and more sugar, 16.4 g versus 0 g, though its sodium is lower at 20 mg versus 50 mg.

Choose the soy protein isolate when protein concentration is the priority and fiber is not a concern. Choose soy flour when you want fiber alongside a still-substantial protein contribution. The two serve different roles despite matching scores, one being closer to pure protein and the other retaining more of the whole soybean's makeup.