Patents
A process for isolation of hyperforin which comprises (i) extracting the dried plant material obtained from Hypericum perforatum L. with a hydrocarbon solvent such as herein described or acetone, (ii) concentrating the extract under vacuum to obtain residue, (iii) dissolving the above said residue in water if extraction is carried out in step (i) by using solvent selected from benzene, chloroform, dichloromethane or acetone and extracting the aqueous solution with a non polar solvent such as herein described, (iv) concentrating the alkane solvent extract to get the residue, (v) purifying the residue by High Performance Liquid Chromatography (HPLC) to get hyperforin of 99% purity, if desired freeze-drying the fraction collected from HPLC.