Method for extracting flavonoid compounds from fructus aurantii

The invention belongs to the technical field of natural pharmaceutical chemistry, and relates to a method for extracting flavonoid compounds from fructus aurantii. The invention provides a method for extracting flavonoid compounds from fructus aurantii, which comprises the following steps: mixing fructus aurantii powder and a deep eutectic solvent, and performing ultrasonic extraction to obtain the flavonoid compounds, the eutectic solvent comprises a hydrogen bond acceptor and a hydrogen bond donor; the hydrogen bond receptor comprises choline chloride and/or betaine; the hydrogen bond donor comprises one or more of polyhydric alcohols, malic acid, levulinic acid, phenolic compounds and carbohydrates. According to the method, the fructus aurantii powder is extracted by adopting the deep-eutectic solvent assisted by ultrasonic extraction, the deep-eutectic solvent and the target extract form a relatively strong hydrogen-bond interaction, so that the extraction of the target extract is facilitated, and compare