Oat is an important food grain
in temperate regions of the world (Butt, Tahir-Nadeem, Khan,
Shabir, & Butt, 2008). Bran is the edible, outermost layer of the oat
kernel and is produced by grinding clean groats or rolled oats to
separate the resulting flour by sieving, bolting, and other suitable
means into fractions such that the oat bran is not more than 50% of
the starting material.