Ginkgo biloba extract

Powdered Ginkgo Extract is prepared from dried and comminuted leaves of Ginkgo extracted with an acetone-water mixture or other suitable solvents. The ratio of the crude plant material to Powdered Extract is between 35:1 and 67:1. It contains NLT 22.0% and NMT 27.0% of flavonoids,calculated as flavonol glycosides,with a mean molecular mass of 756.7,om the dried basis. It contains NLT 5.4% and NMT 12.0% of terpene lactones,consisting of between 2.6% and 5.8% of bilobalide and between 2.8% and 6.2% of the sum of ginkgolide A, ginkgolide B, and ginkgolide C, on the dried basis.