Chanel Patents Goldenrod Extract

US Patent No. 10,206,867 B2 (Serge Holderith, Anais Tromeur, Irina Berlin, Xavier Fernandez, Alexandre Casale, Johannes Grillari, Ingo Lammermann, Florian Gruber, Marie-Sophie Narzt, Gaëlle Gendronneau); Chanel Parfums Beaute, the Centre National De La Recherche Scientifique (CNRS) and the Universite de Nice Sophia Antipolis have patented a cosmetic or dermatological composition (an emulsion) that has alcoholic extract of aerial parts of Solidago virgaurea subsp. Alpestris.


The extract is obtained by a method that entails the following steps: extracting a mixture of flowers, leaves and stems of Solidago virgaurea subsp. alpestris, previously dried and ground, with ethanol, at a temperature between 40°C and 60°C for 2-5 hours, to obtain an extracted mixture; incubating the extracted mixture obtained for at least 12 hour at a temperature between 2-6°C to obtain an incubated mixture; filtering the incubated mixture to obtain a filtrate, bleaching the filtrate by adsorption on activated charcoal to obtain a decolored filtrate, filtering the decolored filtrate on a 20μm membrane to obtain a final filtrate; and removing the ethanol from the final filtrate obtained, and then making a final dilution in 1,3-propanediol to obtain said alcoholic extract.