C - Chemistry – Metallurgy – 07 – J
Patent
C - Chemistry, Metallurgy
07
J
167/286, 260/4
C07J 63/00 (2006.01) C07G 99/00 (2009.01) A23N 1/00 (2006.01) A47B 7/00 (2006.01) A61K 31/01 (2006.01) A61K 31/015 (2006.01) A61K 31/56 (2006.01) A61K 31/78 (2006.01) B01D 11/02 (2006.01) C07C 7/00 (2006.01) C07C 7/10 (2006.01) C07C 11/00 (2006.01) C07C 13/62 (2006.01) C11B 9/00 (2006.01) A61K 31/035 (2006.01) C07C 13/00 (2006.01)
Patent
CA 1122589
ABSTRACT OF THE DISCLOSURE The prevent invention provides a process for obtaining natural terpenes having an antipsoriatic activity, by extraction 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, which process comprises: a) cutting the rhyzomes into strips of 2-3 cms and subjecting the rhyzome strips and the leaves to a continuous drying process over a rotary metallic wirecloth at a temperature not greater than 70°C, b) granulating the dry material with a residual moisture lower than 5% in a disc mill to produce par- ticles of up to 2 mm in diameter with an approximate density of 0.36, c) extracting with a solvent having a dielectric constant of from 1.890 to 9.08, d) evaporating the solvent and e) puri- fying the residue.
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Rivera Blanca Zoila Ney
Salgado Francisco Ramon Albarado
Sumi Antonio Horvath
Conrad Limited
Marks & Clerk
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