Patent ID: 6884908
Filing Date: 2005-04-26
Classification: C11B

Abstract:
1. A process for the isolation of oleanolic acid from the roots of Lantana camara , said process comprising the steps: a) obtaining the dried root of b) grinding the dried root of step (a) to obtain root powder, c) defattening the root powder with organic solvent for a period in the range of 6-12 hours at a temperature in the range of 30-40° C. three times with a solvent, d) extracting the defattened root powder for a period in the range of 6 to 12 hours, at a temperature in the range of 30-40° C. three times with a solvent, e) removing solvent from root powder and solvent mixture to obtain the crude extract, and f) precipitating the crude extract followed by repeated partial crystallization of precipitate with a solvent to obtain the oleanolic acid.