Nymphaea hybrid general flavone as well as extraction method and application thereof

The invention discloses nymphaea hybrid general flavone as well as an extraction method and application thereof, and belongs to the technical field of plant extraction. The extraction method comprises the following steps: (1) adding cellulase and ethanol into nymphaea hybrid powder, carrying out ultrasonic extraction, filtering, and taking the supernatant to obtain a nymphaea hybrid general flavone crude extracting solution; (2) adjusting the concentration and pH of the nymphaea hybrid general flavone crude extracting solution to obtain a loading solution, loading the loading solution on a macroporous resin adsorption column, eluting, and collecting eluant to obtain nymphaea hybrid general flavone; the mass ratio of the nymphaea hybrid powder to the cellulase is 1: (0.01-0.05); the mass volume ratio of the nymphaea hybrid powder to the ethanol is 1g: (20-60mL). According to the method disclosed by the invention, the yield of the total flavonoids extracted from nymphaea hybrid is high, the antioxidant and anti