The high oil content of bran makes it subject to A major rice bran fraction contains 12%-13% oil and highly unsaponifiable components (4.3%). Wheat bran is commonly found in certain cereals, like Raisin Bran or Bran Flakes, as well as bran muffins. The nutritional benefits of wheat bran are mainly undisputed. Wheat bran cannot be stored like regular wheat flour. It tends to get rancid and is best stored in the refrigerator, especially if one plans to store it for long.