What is Corn Bran?

Mary McMahon
Mary McMahon

Corn bran is a food product made from the tough outer layer of corn. Like the brans derived from other grain crops, it is very high in fiber, and it can be used in a wide variety of ways. Many commercial food producers use this substance as a filler in their foods, and to reduce the caloric value of snack foods. It can also be used in home cooking to increase the fiber content of various foods and to add texture.

Corn bran is made from the outer layer of the corn kernel.
Corn bran is made from the outer layer of the corn kernel.

Grains have three parts: the bran, the endosperm, and the germ. The bran is the hard outer shell which protects the grain from the elements. Inside the bran is the endosperm, the bulk of the grain, with the nutrient-rich germ at one end of the grain. In the event that grain is allowed to develop into a seedling, the bran will eventually split open to allow the roots and leaves of the baby plant to emerge.

Corn bran may be used in chips.
Corn bran may be used in chips.

Basic white flour, including white corn flour, is made from the endosperm alone. The endosperm has a soft, mild flavor, but it tends to be lower in fiber and nutrients than the grain as a whole. When the germ is included, the nutritional value increases, and when the bran is included to make whole grain flour, the fiber content also rises.

Corn bran can be processed and sold independently, or simply left on the corn as it is ground into flour. Many corn products such as grits include the bran and the germ for extra nutritional value, and some finer-ground corn flour products may be made with the bran intact as well. When whole grain corn flour is used in a recipe, it tends to be more coarse than white corn flour, with a more complicated texture and flavor.

When plain corn bran is added to a recipe, it greatly increases the fiber content. It can be used in things like cereal, chips, snack bars, and so forth to up the fiber. Because it is largely indigestible, it has a minimal impact on calorie count, so foods designed for dieters are often made with bran to keep the calories low and the food filling. Corn bran is also low in carbohydrates, which is useful for cooks who want to reduce the carbohydrate content of their foods; many low carb foods use this substance to add a corn flavor.

Grits often contain the bran and the germ of corn.
Grits often contain the bran and the germ of corn.
Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a wiseGEEK researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

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Discussion Comments


@copperpipe -- I really like the Quaker corn bran cereal, but I have to say, I get my corn bran fix via grits.

You should definitely try them as an alternative to your steel cut oats; maybe that could be your new hot cereal alternative!


Do you know if it's healthier to eat corn bran crude, or whether it's better to eat it as part of an all-bran cereal that includes little corn bran pellets?

Is one way healthier than the other, or are there any advantages to doing one over the other?


I love eating bran cereal in the morning, and I have to say that I can never decide whether I like oat bran cereal or corn bran cereal better.

I usually use steel cut oats with bran mixed in when I want something hot and soothing, but when it comes to cold cereal, I usually stick with that Quaker crunchy corn bran cereal.

How do you get your bran cereal fix -- corn or oat, or something else entirely?

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