The present invention relates to the technical field of
food processing and particularly provides a high-
fiber low-
glycemic cereal food and a preparation method thereof, the high-
fiber low-
glycemic cereal food comprises the following raw materials in parts by weight: 15-40 parts of common
corn flour, 15-40 parts of high straight-chain
corn flour, 5-20 parts of iron stick yam flour, 5-20 parts of
wheat aleurone layer
powder, 5-15 parts of modified corn
bran powder, 3-10 parts of red date
powder, 3-10 parts of Chinese wolfberry powder and 3-10 parts of mulberry powder. 2-5 parts of
erythritol and 3-10 parts of
skimmed milk powder; according to the scheme, the cereal food which is low in
glycemic index, high in
dietary fiber content, rich in
nutrition and excellent in taste is prepared by taking multiple cereals as main raw materials and combining with various medicinal and edible auxiliary materials through a bacterium-
enzyme synergistic treatment and
extrusion puffing technology; the cereal food prepared by the preparation method disclosed by the invention has the blood glucose generation index of less than or equal to 55, the
fiber content of more than or equal to 10%, crispy, smooth and fine taste and rich fragrance, can be used as
meal replacement food for diabetic people, old people and healthy people, and has wide market prospects and application values.