2. Whole Wheat Bread
The average commercial brown wheat bread contains 1.5 mg of sulfate, while one slice from the same loaf (with approximately 14 slices) has 1.4 IU of vitamin A, 128 calories, and 15.2 mg of calcium. On the other hand, a loaf of commercial white bread contains a slightly lower 1.3 mg of sulfate on average.
3. Soya Products
Soybeans, which are excellent providers of protein, B vitamins, and magnesium salts, are also very rich in sulfates. Soy products, like tofu or soymilk, may contain high amounts of sulfates. Three examples of soy flour, in particular, contain an approximate 1.2 mg of sulfate.
