Patent ID: 11957781
Assignee: CHANEL PARFUMS BEAUTE
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 9:
10. The method according to claim 6, wherein the method comprises the following steps:
a) extracting Swertia chirata with at least one alcoholic solvent to obtain a mixture of Swertia chirata and the at least one alcoholic solvent;
b) filtering the mixture obtained in a) in order to remove the plant residues and obtain a filtrate mixture;
b′) optionally, decolourizing the filtrate mixture obtained at the end of step b);
c) adding a polysaccharide to the filtrate mixture in order to obtain a polysaccharide/extract mixture in the at least one alcoholic solvent;
d) removing the at least one alcoholic solvent from the polysaccharide/extract mixture to obtain a dry extract/polysaccharide mixture;
e) milling the dry extract/polysaccharide mixture obtained at the end of step d) in order to obtain a powder; and
f) extracting with supercritical CO2 the powder obtained at the end of step e), using a solvent comprising supercritical CO2, at a temperature between 40 and 80° C. and at a pressure of between 20 and 60 MPa, to obtain the Swertia chirata extract contained in the solvent used for extracting with supercritical CO2.