| abstract |
The present invention provides a method of manufacturing a concentrated tobacco extract for use in an aerosol-generating article. The method comprises: providing a natural tobacco material; heating the natural tobacco material to a temperature and for a time such that volatile species are released from the natural tobacco material, the volatile species comprising nicotine; collecting the released volatile species and forming a liquid, naturally derived tobacco extract comprising the collected volatile species, a polyhydric alcohol, and at least about 40 percent by weight of water; heating the liquid, naturally derived tobacco extract to evaporate at least some of the water and obtain concentrated tobacco extract, wherein the naturally derived tobacco extract is heated to a temperature and for a time such that the water content in the tobacco extract is reduced by at least about 60 percent. The invention also provides a concentrated, naturally derived tobacco extract obtained from the method. |