Methods for creating concentrated plant material solution are disclosed. Some examples include combining at least a concentrated plant material, at least one terpenoid compound, and a solvent to define a mixture; heating the mixture, wherein a temperature of the mixture is heated above a boiling point of the solvent and wherein the temperature of the heated mixture does not exceed a lower one of a boiling point of the concentrated plant material and a boiling point of the at least one terpenoid compound; and maintaining the temperature of the mixture above the boiling point of the solvent and below the lower one of the boiling point of the concentrated plant material and the boiling point of the at least one terpenoid compound until the amount of solvent remaining in the mixture reaches a predetermined concentration level.

There is provided 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 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.

There is provided 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 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.

Systems for extracting solute from a source material are shown and described. The systems may include: a first fluid pathway comprising a solvent source arranged to receive and provide solvent and a solvent conditioner. The solvent conditioner is arranged to receive liquid solvent, condition received liquid solvent by maintaining or establishing a pressure and/or temperature of the received liquid solvent and provide conditioned liquid solvent. The systems may further include a canister adapted to contain plant material and arranged downstream of the first fluid pathway, thereby producing an extract solution of the conditioned liquid solvent and the essential oil extracted from the plant material.

Systems for extracting solute from a source material are shown and described. The systems may include: a first fluid pathway comprising a solvent source arranged to receive and provide solvent and a solvent conditioner. The solvent conditioner is arranged to receive liquid solvent, condition received liquid solvent by maintaining or establishing a pressure and/or temperature of the received liquid solvent and provide conditioned liquid solvent. The systems may further include a canister adapted to contain plant material and arranged downstream of the first fluid pathway, thereby producing an extract solution of the conditioned liquid solvent and the essential oil extracted from the plant material.

A producing method of a tobacco raw material containing a flavor constituent, comprises: a step A for heating a tobacco raw material in a closed space which is treated with alkali and for taking a flavor constituent released in the gas phase from the tobacco raw material to an outside of the closed space; a step B for allowing a first solvent to capture the flavor constituent by bringing the flavor constituent released in the gas phase in the step A into contact with the first solvent which is a liquid substance at normal temperature on the outside of the closed space; a step C for supplying a second solvent to the tobacco raw material in the closed space after the step A and for taking a normal component which is released as the liquid phase from the tobacco raw material to the second solvent, together with the second solvent to the outside of the closed space; and after the steps B and C, the step D for adding the first solvent capturing the flavor constituent in the step B to the tobacco raw material from which the flavor constituent is released to the outside of the closed space in the step A.

A producing method of a tobacco raw material containing a flavor constituent, comprises: a step A for heating a tobacco raw material in a closed space which is treated with alkali and for taking a flavor constituent released in the gas phase from the tobacco raw material to an outside of the closed space; a step B for allowing a first solvent to capture the flavor constituent by bringing the flavor constituent released in the gas phase in the step A into contact with the first solvent which is a liquid substance at normal temperature on the outside of the closed space; a step C for supplying a second solvent to the tobacco raw material in the closed space after the step A and for taking a normal component which is released as the liquid phase from the tobacco raw material to the second solvent, together with the second solvent to the outside of the closed space; and after the steps B and C, the step D for adding the first solvent capturing the flavor constituent in the step B to the tobacco raw material from which the flavor constituent is released to the outside of the closed space in the step A.

The invention provides a method of extracting and isolating certain compounds from tobacco. The resulting isolate can include more than 90% by weight of a given compound and can be used as a flavor component for tobacco material used in smoking articles and smokeless tobacco compositions. Exemplary compounds that may be present in the isolate according to the invention include, but are not limited to, solanone, neophytadiene, megastigmatrienone, -damascenone, norsolanadione, cis-abienol, -cembratrienediol, -cembratrienediol, sucrose esters, and lutein.

The invention provides a method of extracting and isolating certain compounds from tobacco. The resulting isolate can include more than 90% by weight of a given compound and can be used as a flavor component for tobacco material used in smoking articles and smokeless tobacco compositions. Exemplary compounds that may be present in the isolate according to the invention include, but are not limited to, solanone, neophytadiene, megastigmatrienone, -damascenone, norsolanadione, cis-abienol, -cembratrienediol, -cembratrienediol, sucrose esters, and lutein.

Methods for creating concentrated plant material solution, including combining ethanol-soluble, water-insoluble concentrated plant material with ethanol to define mixtures and reducing the amount of ethanol in the mixtures until the mixtures have viscosities compatible for use with electronic cigarettes. Some examples include combining ethanol-soluble, water-insoluble concentrated plant material, hydrocarbon bases, and liquid solutions containing ethanol to define mixtures, removing the hydrocarbon bases from the mixtures, and reducing the ethanol content of the mixtures until the mixtures define viscosities compatible for use with electronic cigarettes. Some examples include extracting solute from source materials and including the extracted solute in the ethanol-soluble, water-insoluble concentrated plant material.