Part of it in flour is about 1/3- 1/2. Wheat bran is divided into six layers, and the outer five layers contain more crude fiber, less nutrition and are not easy to digest. Wheat bran contains a lot of vitamin B. Rich in cellulose and vitamins, it is mainly used in food, medicine, feed raw materials, wine making and so on.
Extended data:
Wheat husk color division: according to the different husk colors of wheat, wheat can be divided into red-skinned wheat and white-skinned wheat, which are called red-skinned wheat and white-skinned wheat for short. The epidermis of red-skinned wheat (also known as red-grained wheat) is dark red or reddish brown; The epidermis of white-skinned wheat (also known as white-grained wheat) is yellow-white or milky white. Red and white wheat mixed together is called mixed wheat.
Grain quality division of wheat: according to the different grain quality, wheat can be divided into hard wheat and soft wheat, referred to as hard wheat and soft wheat for short. The endosperm structure of durum wheat is dense and translucent, also called horny or glassy; Soft wheat endosperm structure is loose and gypsum-like, also known as silty.
As far as wheat grain is concerned, when its keratin accounts for more than 1/2 of its cross section, it is called keratin grain and durum; When its cutin is less than 1/2, it is called silty soft wheat. For a batch of wheat, according to the China standard, durum wheat refers to wheat with cutin rate not less than 70%; Soft wheat refers to wheat with flour content of not less than 70%.
References:
Baidu encyclopedia-wheat bran