Isolation of a new flavanone from Daidai fruit and hypolipidemic activity of total flavonoids extracts.

In order to further discover the medicinal value of Daidai fruit, an exploration on the hypolipidemic activity of total flavonoids extracts of Daidai fruit (TFEODF) was conducted in high-fat diet-induced hyperlipemia rats. Results indicated that TFEODF exhibited significant hypolipidemic activity which resulted in the decline of serum total cholesterol, triglyceride, low density lipoprotein cholesterol, arteriosclerosis index and rise of high density lipoprotein cholesterol in hyperlipemia rats. For the purpose of expounding the chemical constituents of TFEODF, a phytochemical investigation of TFEODF was carried out for the first time. Research resulted in the isolation of a new compound together with 17 known compounds. This study lay a foundation for the development of a new hypolipidemic agent of traditional Chinese medicine whose chemical constituents were clarified.