초록 ▼

Methods for extracting an extract of volatile odorous compounds from an organic raw material containing odorous compounds is disclosed. The method includes contacting an organic raw material with dimethyl carbonate, as a solvent, in at least one bath at a temperature of 10° C. to 70° C. A liquid org

Methods for extracting an extract of volatile odorous compounds from an organic raw material containing odorous compounds is disclosed. The method includes contacting an organic raw material with dimethyl carbonate, as a solvent, in at least one bath at a temperature of 10° C. to 70° C. A liquid organic phase is obtained that includes the dimethyl carbonate charged with volatile odorous compounds and is collected. If the liquid organic phase comprises an immiscible aqueous phase, decanting occurs to separate the dimethyl carbonate charged with odorous compounds therefrom thereby eliminating the aqueous phase. Next, partially eliminating by evaporation forms a pre-concentrated extract of volatile odorous compounds, which is recovered and if water is present, decanting occurs to eliminate the water. Additionally, concentrating the pre-concentrated extract of volatile odorous compounds by evaporation is performed to obtain the extract of volatile odorous compounds.

대표청구항 ▼

1. A method for extracting an extract of volatile odorous compounds from an organic raw material containing odorous compounds, the method comprising: contacting said organic raw material with dimethyl carbonate used as solvent in at least one bath at a temperature between 10° C. and 70° C. so as to

1. A method for extracting an extract of volatile odorous compounds from an organic raw material containing odorous compounds, the method comprising: contacting said organic raw material with dimethyl carbonate used as solvent in at least one bath at a temperature between 10° C. and 70° C. so as to charge said dimethyl carbonate solvent with volatile odorous compounds of said organic material to obtain a liquid organic phase;collecting the liquid organic phase from said bath;if the collected liquid organic phase comprises an aqueous phase that is immiscible with the dimethyl carbonate resulting from organic material, decanting the liquid organic phase to separate the dimethyl carbonate charged with the volatile odorous compounds from said immiscible aqueous phase; wherein the aqueous phase is eliminated;partially eliminating by evaporation the dimethyl carbonate, subsequently, decanting to eliminate water, and then, recovering a preconcentrated extract of volatile odorous compounds;adding an alcohol or other molecule to the preconcentrated extract of volatile odorous compounds to form an azeotropic mixture with the dimethyl carbonate;andconcentrating the preconcentrated extract of volatile odorous compounds by evaporation of the azeotropic mixture to obtain an extract of volatile odorous compounds. 2. The method according to claim 1, in which the extracted volatile odorous compounds have a molecular weight of less than 350 g/mol. 3. The method according to claim 1, in which the bath is made with circulation of the solvent and may be static, dynamic or stirred, for a final raw material/solvent ratio by weight of 1:1 to 1:10. 4. The method according to claim 1, wherein contacting the organic raw material with dimethyl carbonate includes contact for between 15 minutes and about 10 hours. 5. The method according to claim 1, wherein eliminating the dimethyl carbonate and concentrating the preconcentrated extract of volatile odorous compounds includes heating to a temperature of less than or equal to 90° C. 6. The method according to claim 5, in which evaporation is done under a vacuum or partial vacuum. 7. The method according to claim 1, wherein the alcohol includes ethanol. 8. The method according to claim 1, wherein concentrating the preconcentrated extract of volatile odorous compounds comprises evaporating the azeotropic mixture under vacuum or partial vacuum at a temperature of less than or equal to 60° C. 9. An extract of volatile odorous compounds prepared according to claim 1. 10. The extract according to claim 9, in which extracted volatile odorous compounds have a molecular weight of less than 350 g/mol. 11. A composition comprising the extract of volatile odorous compounds prepared according to claim 1. 12. The composition of claim 11, further comprising a medium for the extract of volatile odorous compounds to be applied as a perfume. 13. The composition of claim 11, further comprising an edible medium. 14. The composition of claim 11, further comprising a suitable cosmetic medium. 15. The method of claim 1, further comprising transforming the extract of volatile odorous compounds into an absolute. 16. The method of claim 1, wherein the extract of volatile odorous compounds comprises at least 3% volatile odorous compounds by weight of the total weight of the extract. 17. The method of claim 1, wherein the extract of volatile odorous compounds comprises at least 10% volatile odorous compounds by weight of the total weight of the extract. 18. A method for extracting an extract of volatile odorous compounds from an organic raw material containing odorous compounds, the method comprising: contacting said organic raw material with dimethyl carbonate used as solvent in at least one bath at a temperature between 10° C. and 70° C. so as to charge said dimethyl carbonate solvent with volatile odorous compounds of said organic material to obtain a liquid organic phase;collecting the liquid organic phase from said bath, the organic phase comprising an aqueous phase immiscible with the dimethyl carbonate;decanting the aqueous phase to eliminate the aqueous phase from the dimethyl carbonate charged with the volatile odorous compounds;after elimination of the aqueous phase, partially eliminating by evaporation the dimethyl carbonate and, then, recovering a preconcentrated extract of volatile odorous compounds;adding an alcohol or other molecule to the preconcentrated extract of volatile odorous compounds to form an azeotropic mixture with the dimethyl carbonate;if the preconcentrated extract of volatile odorous compounds, obtained after partially eliminating the dimethyl carbonate by evaporation, contains water, decanting the preconcentrated extract to eliminate the water before adding the alcohol or other molecule to form the azeotropic mixture; andconcentrating the preconcentrated extract of volatile odorous compounds by evaporation of the azeotropic mixture to obtain an extract of volatile odorous compounds. 19. The method according to claim 18, in which the extracted volatile odorous compounds have a molecular weight of less than 350 g/mol. 20. The method according to claim 18, wherein eliminating the dimethyl carbonate and concentrating the preconcentrated extract of volatile odorous compounds includes heating to a temperature of less than or equal to 90° C. under a vacuum or partial vacuum.