Patent ID: 6143303
Filing Date: 2000-11-07
Classification: A61K

Abstract:
A process for preparing a biologically active component from the plants Dodonaea petiolaris and Dodonaea viscosa comprising the steps of:a) separating the plant matter into groups, said groups including roots, leaves, bark, seeds and flowers;b) preparing individual extracts of said roots, leaves, bark, seeds and flowers by organic solvent extractions;c) combining the extracts obtained from each of said roots, leaves, bark, seeds and flowers into a residue;d) subjecting said residue to solvent extraction with ethanol;e) recovering the solvent by distillation and removing traces of the solvent under mild vacuum yielding a concentrated absolute; andf) oxidizing said absolute by exposure to gaseous oxygen for about 20 hours at an ambient temperature of about 35 to 40 deg. C.