New advances in study of extraction of citrus flavonoids

Flavonoids are a kind of natural plant ingredients which have broad prospects for development and application.Citrus is a good resources of flavonoids.Because of its rich biological activities,citrus flavonoids play a significant role in human's health protection,which have broad application prospects in the field of food industry and medicine.In this paper,the types,distribution and the physiological activities of citrus flavonoids were firstly introduced,the extraction techniques of citrus flavonoids was summarized,the principles of these methods had been discussed,and their advantages and disadvantages were compared.