Dry milling methods for preparing oat products enriched in the content of β-
glucan and methods for preparing foodstuffs incorporating such an enriched oat product especially ready-to-eat cereals are provided. Heat conditioned dehulled oats are dry milled to form a coarse whole non defatted oat flour and then, without a preceding removal of fat, dry fractionated into coarser
bran and finer oat flour fractions at
multiple stages. The coarse oat flour is first dry classified to separate or form a coarser fraction
oat bran containing more concentrated β-
glucan and a finer oat flour or
starch containing or
endosperm containing fraction. The
oat bran is fractionated into a coarse and fine
oat bran sub-streams. The oat
bran sub-streams are each is subjected to second roller milling step and then bolted. The second
bolting of oat
bran is then subjected to a third round of milling and classification to form a high β-
glucan content (>7-9%) oat bran and a low β-glucan content (3%) oat flour. The methods are low cost and commercially practical. Preferably, the high β-glucan content oat bran and oat flour fractions can have a
syringic acid to
ferulic acid ratio of at least 2.5:1 indicating improved
flavor. Preferably, the oat bran and oat flour have a Farinograph value of 5 to 20 minutes indicated partial gelatinization. The oat bran and oat flours can be used to prepare foodstuffs such as ready-to-eat cereals.