The result is a white powder like that shown below: pure alumina. The caustic soda is returned to the beginning of the process and used again. At this point, the alumina is ready for conversion into aluminum at a smelter. Alumina is also used in making chemical and ceramics.
1 Soy protein is made from soy beans, one of the best non-meat protein sources around. 2  Soy beans contain a lot of protein per serving, and there is almost no fat or cholesterol in soy protein. 3  This makes it one of the heart-smart proteins to consider.4  Suppress your appetite.oy Protein. 1  Soy protein is made from soy beans, one of the best non-meat protein sources around. 2  Suppress your appetite. 3  Provide antioxidants to increase protection from free radicals and oxidative stress. 4  Reduce your risk of diabetes, cancer, and heart disease.
Cooking tofu in a stir fry pan. Soybean protein naturally contains compounds called isoflavones, predominantly genistein and daidzein. These compounds are not estrogens and do not directly add to estrogen levels in the blood. They can, however, affect estrogen metabolism. Soy protein and isoflavones may have minimal effects on blood estrogen levels in postmenopausal women and in men. In premenopausal women who have much higher natural estrogen levels, eating soy protein likely has no effect.