Method for preparing an extract of ginkgo biloba leaves...

A - Human Necessities – 61 – K

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

A61K 36/16 (2006.01) A61P 7/02 (2006.01) A61P 9/00 (2006.01) A61P 9/10 (2006.01) A61P 9/14 (2006.01) A61P 21/00 (2006.01) A61P 25/00 (2006.01) A61P 25/16 (2006.01) A61P 25/28 (2006.01) A61P 35/00 (2006.01) A61P 43/00 (2006.01)

Patent

CA 2443302

The invention concerns a method for preparing an extract of Ginkgo biloba leaves, comprising the following successive steps: i) extracting dry fragments of Ginkgo biloba leaves in ethanol containing at least 20 wt. % of water; ii) concentrating the extract under reduced pressure in the presence of at least an aqueous sodium chloride solution and eliminating the dark oil from the rest of the clear solution; iii) washing the residual aqueous solution by liquid-liquid extraction with n-hexane n-heptane or cyclohexane; iv) liquid-liquid extraction of the washed aqueous phase with ethyl acetate; v) washing the ethyl acetate phase obtained at step iv) with a sodium chloride solution then evaporating by dry process the washed ethyl acetate phase.

L'invention concerne un procédé de préparation d'un extrait de feuilles de Ginkgo biloba, lequel comporte les étapes successives suivantes: i) extraction de fragments secs de feuilles de Ginkgo biloba dans de l'éthanol contenant au maximum 20% en poids d'eau; ii) concentration de l'extrait sous pression réduite en présence d'une solution aqueuse de chlorure de sodium et élimination de l'huile sombre du reste de la solution claire; iii) lavage de la solution aqueuse résiduelle par extraction liquide-liquide avec du n- heptane ou du cyclohexane; iv) extraction liquide-liquide de la phase aqueuse lavée avec de l'acétate d'éthyle; v) lavage de la phase acétate d'éthyle obtenu à l'étape iv avec une solution de chlorure de sodium puis évaporation à sec de la phase acétate d'éthyle lavée.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method for preparing an extract of ginkgo biloba leaves... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for preparing an extract of ginkgo biloba leaves..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for preparing an extract of ginkgo biloba leaves... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1776850

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.