Origin&Technology: ginkgo biloba is one of the world's oldest living tree species. the earliest record of the use of ginkgo biloba leaves as a medicine is mentioned in the chinese materia medical shen nung pen tsao ching, as an aid for blood circulation and disorders of lungs. Appearance: light yellow powder Specification: 1.ginkgo bilboa extract 24/6 total ginkgo flavone glycosides>24% total terpene lactones>6% 2.CP2005 total ginkgo flavone glycosides>24% ouercatin:kaemperol 0.8~1.5 total terpene lactones>6% ginkgolic acid<1 ppm 3.Germany Standard total ginkgo flavone glycosides 22.0%~27.0% tolal terpene lactones 5.0%~7.0% biobalides 2.6%~3.2% ginkgolic acid:<=1.0ppm 4. water-soluble ginkgo biloba extract 24/6 water solubility: 5g ginkgo biloba extract will be dissolved completely in 100g water total ginkgo flavone glycosides>24.0% total terpene lactones>6.0% ginkgolic acid:<=1.0ppm