Studies on the hydrolytic conditions of ginkgo flavonoids glycosides in ginkgo biloba leaves by HPLC

Studies on the hydrolytic conditions of ginkgo flavonoids glycosides in ginkgo biloba leaves by HPLC. The result are as follows: Extract of 1 g ginkgo biloba leaves was dissolved in 30 ml methanol, add 5 ml 8 3 mol·L -1 . Hydrolytic 60 minutes at (85±1)℃. The recovery of quercetin. Kaempferol and isorhmnetin were 101 4%, 102% and 98% respectively.