Natural bran is bran that has had nothing added to it.
White rice has had the bran (outer layer) removed so water permeates in to it faster than brown rice which has the bran intact.
yes. Bran Cereals, 5-10 grams - All-Bran, Bran Buds, 100% Bran, Raisin Bran
Bran flour is flour to which bran flakes have been added. The bran may be coarse or fine depending on specifications.
Bran Vargas goes by Bran, Brandolf, and Dolf.
yes bran have gluten
Not normally. Bran flakes are usually made from wheat bran and wheat flour to bind the bran into a flake.
Unprocessed bran is not the same as oat bran; it would be referring to wheat bran. Have you checked at a health food store? They will definitely carry it. As far as subbing the oat bran, it would depend on the recipe.
Wheat Bran is just one ingredient in bran flakes, and not the same thing. Substitute cornflakes instead.
Bran is a part of the wheat plant.
There is no scientific name for rice bran. Rice bran gets its name from the plant, which is the rice, Bran is the outer part of the grain.