Sugar-free high-flavone high-oligosaccharide enzymatic hydrolysis highland barley powder and preparation method thereof

The invention discloses sugar-free high-flavonoid high/low-polysaccharide enzymatic hydrolysis highland barley flour. The invention discloses a preparation method of the sugar-free high-flavonoid high/low-polysaccharide enzymolyzed highland barley powder, which comprises the following steps: S1, baking hulled highland barley, and then grinding to obtain an abrasive material; s2, cellulase, xylanase, beta-glucanase, amylase, transglucosidase and protease are added into the grinding material for enzymolysis for 1-2 h, and the temperature of a system is kept at 50-60 DEG C in the enzymolysis process; the mass ratio of the cellulase to the xylanase to the beta-glucanase to the amylase to the transglucosidase to the protease to the grinding material is (0.03 to 0.05) to (0.03 to 0.05) to (0.03 to 0.05) to (0.05 to 0.08) to (0.05 to 0.08) to (0.1 to 0.12) to 100; and S3, homogenizing, centrifuging, concentrating and drying the enzymatic hydrolysate obtained in the step S2 to obtain the sugar-free high-flavone high-