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US 2019/0336435 A1Published application
Method for obtaining a diglycoside-enriched armeria maritima extract, and use thereof in cosmetics
AssigneesBiotechmarine, Societe D'Exploitation De Produits Pour Les Industries Chimiques Seppic, Centre National De La Recherche Scientifique, L'universite De Strasbourg
InventorsLorène GOURGUILLON, Laetitia CATTUZZATO
Life of this patent
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Abstract
Disclosed are a method for preparing a hydroalcoholic extract obtained from a biomass of the shoots of a plant from the family of Plumbaginaceae, a butanol extract of Armenia maritima, a method for the preparation thereof, the use thereof, and compositions containing same.
Claims21
A process for preparing an aqueous-alcoholic extract originating from a biomass of aerial parts of a plant of the Plumbaginaceae family, comprising the following successive steps:
- at least one step A) of maceration in an aqueous-alcoholic solution of said aerial parts of said plant of the Plumbaginaceae family, for which the alcohol used is chosen from methanol or ethanol, in order to obtain an aqueous-alcoholic suspension therefrom;
- at least one step B) of filtration of said aqueous-alcoholic suspension obtained in step A), in order to separate an aqueous-alcoholic extract from the plant biomass;
- a step C) of drying said aqueous-alcoholic extract obtained in step B), in order to obtain a dry residue therefrom;
- a step D) of dissolving said dry residue obtained in step C) in water, in order to obtain an aqueous phase φ0;
- at least one first step E1) of liquid-liquid extraction by bringing said aqueous phase φ0 obtained in step D) into contact with a nonpolar organic solvent, in order to obtain, after separation of the immiscible phases, a new aqueous phase φ1;
- at least one second step E2) of liquid-liquid extraction by bringing said aqueous phase φ1 obtained in step E1) into contact with a polar aprotic organic solvent, in order to obtain, after separation of the immiscible phases, a new aqueous phase φ2;
- at least one third step E3) of liquid-liquid extraction by bringing said aqueous phase φ2 obtained in step E2) into contact with a polar protic organic solvent chosen from alkanols comprising from four to eight carbon atoms, or alkanediols comprising from four to eight carbon atoms, in order to obtain, after separation of the immiscible phases, said expected alcoholic extract and a new aqueous phase φ3.
4 more elements
A butanolic extract of a biomass of Armeria maritima, obtained by the process comprising the following successive steps:
- a step A0) of harvesting said aerial parts of Armeria maritima, in order to obtain therefrom harvested material of said aerial parts;
- a step A1) of drying said harvested material obtained in step A0);
- a step A2) of grinding said harvested material dried in step A1), in order to obtain a ground material of said dried harvested material;
- if necessary, or if desired, a step A3) of pulverizing the ground material obtained in step A2), in order to obtain a powder of said dried harvested material;
- at least one step A) of maceration, in an aqueous-ethanolic solution having a ratio by volume of ethanol/water equal to 80/20, of said powder obtained in step A3, in order to obtain an aqueous-ethanolic suspension therefrom;
- at least one step B) of filtration of said suspension obtained in step A), in order to separate an aqueous-ethanolic extract therefrom;
- a step C) of drying said aqueous-ethanolic extract obtained in step B), in order to obtain a dry residue therefrom;
- a step D) of dissolving said dry residue obtained in step C) in water, in order to obtain an aqueous phase φ0;
- at least one step E1) of liquid-liquid extraction, by bringing said aqueous phase φ0 obtained in step D) into contact with cyclohexane at a ratio by volume of cyclohexane/aqueous phase φ0 equal to ⅔, in order to obtain, after separation of the immiscible phases, a new aqueous phase φ1;
- at least one step E2a) of liquid-liquid extraction by bringing said aqueous phase φ1 obtained in step E1) into contact with dichloromethane at a ratio by volume of dichloromethane/aqueous phase φ1 equal to ⅔, in order to obtain, after separation of the immiscible phases, a new aqueous phase φ2a;
- at least one step E2b) of liquid-liquid extraction by bringing said aqueous phase φ2a obtained in step E2) into contact with ethyl acetate at a ratio by volume of ethyl acetate/aqueous phase φ2a equal to ⅔, in order to obtain, after separation of the immiscible phases, a new aqueous phase (22b;
- at least one step E3) of liquid-liquid extraction by bringing said aqueous phase φ2b obtained in step E2b) into contact with 1-butanol saturated with water at a ratio by volume of 1-butanol/aqueous phase φ2 equal to ⅔, in order to obtain, after separation of the immiscible phases, said expected butanolic extract and a new aqueous phase φ3.
9 more elements
Dependencies are inferred from the claim text.