Wheat bran is described as which part of the wheat kernel, and what is its typical crude protein content?

Wheat bran is described as which part of the wheat kernel, and what is its typical crude protein content?

• A. Coarse outer covering of wheat; contains 15-17% CP
• B. The inner starch-rich portion of the kernel; 5-8% CP
• C. Germ-rich fraction; 8-12% CP
• D. Endosperm-only fraction; 3-6% CP

Answer: (A)

Wheat bran is the coarse outer covering of the wheat kernel, the part that is removed from the inner starch-rich endosperm during milling. This outer layer includes the pericarp and aleurone layers and is richer in protein than the starchy interior, which is why its crude protein content is typically around 15–17% on a dry matter basis. In contrast, the inner endosperm is mainly carbohydrate with low protein (roughly 5–8%), while the germ is a smaller, embryo-rich portion that carries more fat and variable protein content. The endosperm-only fraction is mostly starch with about 3–6% CP, so it doesn’t describe bran.

Wheat bran is the coarse outer covering of the wheat kernel, the part that is removed from the inner starch-rich endosperm during milling. This outer layer includes the pericarp and aleurone layers and is richer in protein than the starchy interior, which is why its crude protein content is typically around 15–17% on a dry matter basis. In contrast, the inner endosperm is mainly carbohydrate with low protein (roughly 5–8%), while the germ is a smaller, embryo-rich portion that carries more fat and variable protein content. The endosperm-only fraction is mostly starch with about 3–6% CP, so it doesn’t describe bran.