... single class Ginkgoopsida, order Ginkgoales, family Ginkgoaceae, genus Ginkgo and is the only extrant species within this group.2 ... , bronchitis, and poor circulation. The active component of Ginkgo biloba is the terpene fraction, which consists of ginkgolides ... and bilobalides. These ginkgo flavone-glycosides have powerful antioxidant and free radical scavenging ...