PROCESS FOR OBTAINING NATURAL TERPENES HAVING ANTIPSORIATIC ACTIVITY BY EXTRACTION FROM THE RHIZOMAS AND LEAVES OF SEVERAL FERNS

摘要

A process for extracting antipsoriatic natural terpenes from rhyzomes and leaves of Dryopteris crassirhizoma, Polypodium vulgara Linn, Polypodium leucotomos, Phlebodium decumanun J. Smith, Polypodium decumanum, Cyathea taiwaniana and rhyzomes of Polypodium aureum Linn and Polypodium triseriale comprises solvent extraction of a dry comminuted mass of the plant matter, evaporating off the solvent and purifying the residue.