Patent ID: 8404283

Claim:
A method of obtaining a standardized extract of leaves of Aleurites moluccana , wherein the standardized extract is standardized to 2″-O-rhamnosylswertisin and wherein the standardized extract is obtained by the following steps: (i) collecting, drying and subdividing leaves of Aleurites moluccana; (ii) pre-extracting the leaves of step (i) with ethanol to provide a first extract; (iii) extracting the first extract obtained in step (ii) with water and ethanol to provide a second extract; (iv) filtering the second extract obtained in step (iii) to provide a third extract; (v) concentrating the third extract obtained in step (iv) to provide a concentrated extract; (vi) pasteurizing the concentrated extract at a temperature of approximately 95 degrees C. for approximately 3 minutes to provide a pasteurized extract; and (vii) drying the pasteurized extract to provide a dried extract; wherein the dried extract is then qualitatively and quantitatively analyzed to determine the amount of 2″-O-rhamnosylswertisin by comparison with a marker, wherein the marker 2″-O-rhamnosylswertisin.