The invention relates to a method for preparing
oat bran dietary fiber food. The method comprises the following steps of: cleaning oat grains, removing stone and impurities, washing, removing ash and shriveled grains, leaching, frying, pealing and crushing, and sorting fine oat
meal and
oat bran; carrying out enzymolysis on the
oat bran by adopting high temperature resistant alpha-
amylase, heating and
drying or
drying with microwaves, spirally bulking, and the like to obtain the oat
bran dietary fiber food. The method provided by the invention not only increases the
flavor and the crispy degree of the oat
bran, but also improves the water
solubility of functional factor beta-
glucan; and by eating the oat
dietary fiber, the aims of preventing atherosclerosis, hypertension, coronary
disease and
constipation, reducing
blood pressure and
cholesterol, clearing intestines and
stomach, improving the
immunity and protecting the health are achieved; and the oat
bran dietary
fiber food has great benefits of promoting
physical strength and prolonging the life for middle-aged and
elderly people.