IMPROVED METHOD FOR PREPARING GINKGO EXTRACTS HAVING A LOW CONTENT OF 4' -O-METHYL PYRIDOXINE AND/OR BIFLAVONES

摘要

THE PRESENT INVENTION RELATES TO AN IMPROVED MULTI-STEP METHOD FOR PREPARING AN EXTRACT FROM GINKGO BILOBA HAVING A REDUCED CONTENT OF 4'-O-METHYL PYRIDOXINE AND/OR BIFLAVONES, WHEREIN THE DEPLETION IS CARRIED OUT BY FILTRATION OVER AN AD- SORBER RESIN AND/OR AN ION EXCHANGER AND THE SUBSTANCES TO BE REMOVED ARE RETAINED ON THE RESIN. THE INVENTION FURTHER TELATES TO AN EXTRACT FROM GINKGO BILOBA HAVING A REDUCED CONTENT OF 4'-O-METHYL PYRIDOXINE AND/OR BIFLAVONES, WHICH IS OBTAINABLE BY THE METHOD ACCORDING TO THE PRESENT INVENTION, AS WELL AS TO ITS USE.