Method and test kit for recreation of an odor

Patent metadata

Field	Value
Publication number	US-11078442-B2
Application number	US-201716477310-A
Country	US
Kind code	B2
Filing date	Feb 3, 2017
Priority date	Feb 3, 2017
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

Suggested is a method for the extraction of fragrances from natural starting material consisting of the following steps: (a) providing a sample of the natural starting material in a pressure proof sample container; (b) bringing in the sample in contact with liquefied petroleum gas of propane and/or butane gas, preferably; (c) extracting the fragrances from the natural starting material provided in step (b); (d) venting of the pressure proof sample container, while the liquefied petroleum gas is evaporated and the fragrances is maintained as residue in the container; and optionally (e) dissolving the fragrances in a suitable solvent.

First claim

The invention claimed is:

1. A kit having a dimension of about 50 cm*60*cm*15 cm and suitable for a micro-extraction of samples of fragrances from natural starting materials, comprising:
(i) a pressure proof double-walled sample container consisting of an inner wall and an outer wall, said container equipped with an exchangeable valve and forming a gas-tight seal;
(ii) a pressure container, containing liquefied propane and/or butane gas, equipped with an outlet device;
(iii) a coupler for the connection of (i) and (ii);
(iv) a sachet, suitable for the intake of said sample materials; and
(v) a storage container suitable for storing the extracted compounds.

2. The kit of claim 1 , wherein the inner wall is made of glass and the outer wall is made of synthetic thermoplastic materials.

3. The kit of claim 1 , wherein the inner wall is made of borosilicate glass.

4. The kit of claim 1 , wherein the ground of the inner wall is rounded for easy removal of the fragrance extract.

5. The kit of claim 1 , wherein the outer wall is made from polypropylene.

6. The kit of claim 1 , wherein the outer wall is made of plastic and the inner wall is made of glass.

7. The kit of claim 6 , wherein the glass is tinted.

8. The kit of claim 1 , configured to sustain a pressure of about 1 to about 10 bar.

9. The kit of claim 1 , additionally comprising a screw cap for said pressure proof sample container and comprising said exchangeable valve configured to be coupled to a gas-adapter in turn configured to be coupled to said pressure container as said coupler.

10. The kit of claim 1 , wherein an end of said pressure proof sample container opposite said exchangeable valve is closed.

11. A method for the extraction of fragrances from natural starting materials with the kit of claim 1 , and comprising the following steps:
(a) placing a sample of the natural starting materials in the sachet and providing the sample in the pressure proof double-walled sample container;
(b) bringing the sample in contact with liquefied propane and/or butane gas;
(c) extracting the fragrances from the sample provided in step (b);
(d) venting of the pressure proof double-walled sample container, while the liquefied propane and/or butane gas is evaporated and the fragrances are maintained as residue in the pressure proof double-walled sample container; and
(e) dissolving the fragrances in a solvent selected from the group consisting of an alcohol having 1 to 5 carbon atoms, an ester having 1 to 5 carbon atoms, a ketone having 1 to 5 carbon atoms, an alkane having 5 to 8 carbon atoms, and mixtures thereof.

12. The method of claim 11 , wherein step (b) is conducted at a temperature of from 5° C. to 70° C. and/or a pressure of from 0.5 bar to 10 bar.

13. The method of claim 11 , wherein the natural starting materials are selected from the group consisting of a whole plant, leaves, blossoms, stems, seeds, bark, wood, resins, petals, stamen, pollen, fruits, root or a shoot of the plant, parts of fruits or blossoms, and mixtures thereof.

14. The method of claim 11 , wherein said solvent is methanol and/or ethanol.

15. The method of claim 11 , wherein the extract obtained from step (c) comprises a mixture of fragrances.

16. The method of claim 11 which is a micro-extraction method for odor test.

17. The method of claim 11 , wherein said sample of said natural starting material has a maximum weight of 50 g.

Assignees

• Symrise Ag

Inventors

• Diaz Edison
• Kohrs Daniel
• Michels Katharina
• Buch Sebastian

Classifications

• C11B9/025 Primary

  Recovery by solvent extraction · CPC title

• B01L2300/12

  Specific details about materials · CPC title

• B01L2300/049

  Valves integrated in closure · CPC title

• B01D11/0288

  Applications, solvents · CPC title

• B01D11/0269

  Solid material in other moving receptacles (B01D11/0238 takes precedence) · CPC title