Ginkgo Biloba Extract(5)

Ginkgo Biloba Extract   (1) CP2005   (2)  EP.6.1 (3) USP  31/NF26     

The quality standard of the Ginkgo Biloba Extract according to the 2005 chinese

 medicine/herb tests dating

Character:light brownish-yellow or dark brown powder,little bitter .

Loss on drying :not more than  0.5%

Residue on ignition:not more than 0.8%

Heave metal<20PPM

Assay:HPLC,

 (1)CP2005

      Total Ginkgo flavone glycosides ≥ 24%
      Quercatin: Kaemperol 0.8--1.5
      Total terpene lactones ≥ 6%
      Ginkgolic acid ≤ 10ppm

  (2)  EP.6.1 (3) USP  31/NF26  
       Total Ginkgo flavone glycosides ≥ 24%
      Quercatin: kaemperol  0.8--1.5
      Total terpene lactones ≥ 6%
     Ginkgolic acid ≤5ppm

3Minimal acid
     Total Ginkgo flavone glycosides ≥ 24%
     Quercatin: Kaemperol 0.8--1.5
     Total terpene lactones ≥ 6%
    Ginkgolic acid ≤ 1ppm