Abstract: Embodiments described herein include a ground tobacco composition, wherein at least 90% by weight of the tobacco in the composition has a particle size in the range of about 200 ?m to about 5 mm.

Abstract: Embodiments described herein include a ground tobacco composition, wherein at least 90% by weight of the tobacco in the composition has a particle size in the range of about 200 ?m to about 5 mm.

Abstract: Embodiments described herein include a method of making a tobacco extract comprising; (a) contacting tobacco with an extraction solvent such that tobacco components are extracted from the tobacco into the solvent, wherein the extraction solvent comprises a supercritical fluid; (b) separating the residual tobacco solids from the supercritical extraction solvent containing tobacco components; (c) exposing the extraction solvent containing tobacco components to conditions in a vessel at which the extraction solvent is subcritical, thereby releasing the tobacco components from the extraction solvent; and then (d) washing the vessel with an entrapment solvent which dissolves the tobacco components, wherein the entrapment solvent comprises an aerosol generating agent.

Abstract: Embodiments described herein provide a method of making a tobacco extract comprising; (a) contacting tobacco with an extraction solvent in a first chamber such that tobacco components are extracted from the tobacco into the extraction solvent, wherein the extraction solvent is a supercritical fluid in the first chamber; (b) passing the extraction solvent containing tobacco components along a line towards a second chamber, wherein a valve is present in the line and the conditions downstream of the valve are such that the extraction solvent is subcritical; and (c) pumping entrapment solvent into a flow downstream of the valve, wherein the tobacco components are released from the extraction solvent by transfer to subcritical conditions and are dissolved in the entrapment solvent, whereby the tobacco components dissolved in entrapment solvent are collected in the second chamber.

Abstract: The invention provides Embodiments described herein include a method of making a tobacco extract comprising; (a) providing tobacco and an entrapment solvent in a partitioned vessel, wherein the tobacco and entrapment solvent are separated by the partition, and the vessel is configured such that the tobacco and entrapment solvent cannot contact each other; (b) flowing a supercritical extraction solvent through the vessel, wherein the extraction solvent and any dissolved substances can pass through the partition; whereby tobacco components are extracted from the tobacco into the extraction solvent and carried across the partition, wherein the extraction solvent contacts the entrapment solvent and tobacco components are transferred from the supercritical extraction solvent into the entrapment solvent.

Abstract: Embodiments described herein include a ground tobacco composition, wherein at least 90% by weight of the tobacco in the composition has a particle size in the range of about 200 ?m to about 5 mm.

Abstract: Embodiments described herein include a method of making a tobacco extract comprising; (a) contacting tobacco with an extraction solvent such that tobacco components are extracted from the tobacco into the solvent, wherein the extraction solvent comprises a supercritical fluid; (b) separating residual tobacco solids from the extraction solvent containing tobacco components; (c) providing an entrapment solvent in a vessel, exposing the extraction solvent containing tobacco components to conditions in that vessel, wherein the conditions in the vessel are such that the extraction solvent is subcritical, thereby releasing the tobacco components from the extraction solvent, and wherein the entrapment solvent dissolves the tobacco components released from the extraction solvent.