Preparation method of anti-free-radical biscuits

The invention discloses biscuits with an anti-free-radical function and a preparation method thereof. The biscuits are prepared from the following raw materials in parts by weight: 100 to 110 parts of flour, 1 to 2 parts of yeast, 10 to 12 parts of fructus siraitiae extract, 5 to 8 parts of centaurea cyanus powder, 6 to 8 parts of sambucus extract, 8 to 9 parts of grape seed extract, 15 to 20 parts of pastry margarine, 2 to 3 parts of table salt, 50 to 70 parts of water, 1 to 2 parts of a dough modifier, 2 to 3 parts of vitamin C and 18 to 20 parts of fresh milk. According to the anti-free-radical biscuits disclosed by the invention, a two-phase powder blending manner is adopted and the anti-free-radical biscuits contain anthocyanin and the vitamin C and have relatively good anti-oxidization and anti-free-radical health-care effects. Meanwhile, a nitrogen protection effect component is not damaged in a processing process. The additional value of the biscuits is improved so that the biscuits are suitable for c