It is understood that whole wheat flour is ground only when it is ground, and there is no procedure to remove bran, but whole wheat flour contains bran and germ, all of which are ground into powder, which is called whole wheat flour. In the past, wheat bran was not valued, so it was often used as feed. Now after many studies, it has been proved that the bran in wheat contains cellulose with high nutritional value. If it is often mixed with flour to make whole wheat bread for consumers to eat, it can keep people healthy and energetic, so bran bread should be popularized.

The so-called flour generally refers to white flour produced after wheat bran is removed, and it is sold in various grades in the market. It can be used in all kinds of steamed bread, bread, cakes and biscuits, and is the most basic material for all baked goods.