Oat bran is made from the outer layers, the germ and the outer layers of the endosperm. Although the proportion of the outer layers and the germ is only 30 % of the entire oat grain, 85 % of the vitamins, 80 % of the minerals, 60 % of the protein and 85 % of the important fibre are stored here. Edible bran consists of the pericarp, seed coat and aleurone layer of cereal grains as well as variable parts of the peripheral layers of the endosperm. Wheat bran contains at least 45 % fibre.
In the past, no distinction was made between soluble and insoluble fibre. But this is very important because soluble fibre in particular can have a positive effect on cholesterol levels. And oats perform excellently with a soluble fibre content of 46 %. Wheat bran, on the other hand, only contains 8 % soluble fibre.
