| abstract |
The object of the invention is a process for the preparation of an active principle, characterized in that it comprises the following stages: - solubilization of dragon blood, in particular in the form of a resin exudate of the variety of Daemonorops draco or Croton lechleri, in a hydroglycolic solution containing between 0 and 100% glycol, - filtration, decantation or centrifugation in order to separate the solubilized phase from insoluble products, - successive concentration of the active phase by filtration, ultrafiltration, osmosis and / or nanofiltration. |