| 摘要 |
THIS INVENTION PROVIDES A METHOD FOR PREPARING A BIOLOGICALLY ACTIVE GINKGO BILOBA EXTRACT THAT IS NOT SUBJECT TO ENVIRONMENTAL RESTRICTIONS AND IS EFFICIENT. THE METHOD INVOLVES EXTRACTING PURIFIED GINKGO BILOBA FROM GINKGO BILOBA LEAF THROUGH A SERIES OF STEP USING ALCOHOL AS A SOLVENT, INCLUDING FILTRATION, VACUUM DISTILLATION, ADSORPTION WITH SILICA GEL, CENTRIFUGATION, AND CHROMATOGRAPHY. THE INVENTION ALSO PROVIDES FRO A METHOD OF MAKING DIETARY SUPPLEMENTS FROM THE GINKGO BILOBA PRODUCT AND OF ADMINISTERING THESE SUPPLEMENTS. |
