Ultrasonic-Assisted Ionic Liquid Extraction of Four Biflavonoids from Ginkgo biloba L.

摘要

In the study, four main biflavonoids (bilobetin (BIL), ginkgetin (GIN), isoginkgetin (IGIN) and sciadopitysin (SCI)) were ex- tracted from Ginkgo biloba L. by ultrasonic-assisted ionic liquid extraction (UAILE). The above four biflavonoids from Ginkgo biloba L. were simultaneously determined by the established high performance liquid chromatography (HPLC) approach. Next, three novel ionic liquids (ILs) were synthesized by one- step method from benzoxazole and three acids or salts.