US 11,717,021 B2
Method of extracting volatile compounds from tobacco material
Oscar Francisco Swenson Pontes, Rio de Janeiro (BR); Eduardo José Faria Miranda, Rio de Janeiro (BR); and Luis Gustavo Teixeira dos Reis, Rio de Janeiro (BR)
Assigned to BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED, London (GB)
Appl. No. 16/608,278
Filed by BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED, London (GB)
PCT Filed Apr. 26, 2018, PCT No. PCT/GB2018/051098
§ 371(c)(1), (2) Date Oct. 25, 2019,
PCT Pub. No. WO2018/197879, PCT Pub. Date Nov. 1, 2018.
Claims priority of application No. 1706778 (GB), filed on Apr. 28, 2017.
Prior Publication US 2020/0187551 A1, Jun. 18, 2020
Int. Cl. A24B 15/24 (2006.01); A24B 15/26 (2006.01); A24B 15/12 (2006.01)
CPC A24B 15/241 (2013.01) [A24B 15/26 (2013.01); A24B 15/12 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method of extracting one or more volatile compounds of interest from tobacco material, the method comprising the steps of:
i) providing tobacco material;
ii) subjecting the tobacco material to steam distillation; and
iii) extracting one or more volatile compounds of interest from the tobacco material with a solvent, wherein the solvent is a mixture of pentane and diethyl ether;
wherein distillation step (ii) and extraction step (iii) are carried out simultaneously and at a pH of no greater than 2, and wherein the period during which both the distillation step (ii) and the extraction step (iii) are carried out is from about 8 to about 20 hours.