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.

Isolated O-methylated flavonoid compounds and mixtures of o-methylated flavonoid compounds derived from a plant of the Nicotiana species and methods of obtaining such compounds are provided. The o-methylated flavonoids can be combined with tobacco materials to produce tobacco products (e.g., smoking articles) to enhance the sensory characteristics thereof. The o-methyl flavonoids can alternatively be combined with non-tobacco materials for dietary supplement and/or pharmaceutical use.

Isolated O-methylated flavonoid compounds and mixtures of o-methylated flavonoid compounds derived from a plant of the Nicotiana species and methods of obtaining such compounds are provided. The o-methylated flavonoids can be combined with tobacco materials to produce tobacco products (e.g., smoking articles) to enhance the sensory characteristics thereof. The o-methyl flavonoids can alternatively be combined with non-tobacco materials for dietary supplement and/or pharmaceutical use.

A process for treating a tobacco material comprising: (a) extracting a tobacco material with a solvent to produce a tobacco extract and a tobacco residue; (b) contacting the tobacco extract with an antioxidant; and (c) contacting the mixture of (b) with an antioxidant scavenger, to produce a treated tobacco extract. The treated tobacco extract is reapplied to the tobacco residue to form a treated tobacco material. In addition, a smoking composition, a smoking article and a smokeless tobacco oral delivery product contain the treated tobacco material.

A process for treating a tobacco material comprising: (a) extracting a tobacco material with a solvent to produce a tobacco extract and a tobacco residue; (b) contacting the tobacco extract with an antioxidant; and (c) contacting the mixture of (b) with an antioxidant scavenger, to produce a treated tobacco extract. The treated tobacco extract is reapplied to the tobacco residue to form a treated tobacco material. In addition, a smoking composition, a smoking article and a smokeless tobacco oral delivery product contain the treated tobacco material.

A method for preparing a tobacco flavor extract from cured tobacco materials. The tobacco flavor extract has reduced level of tobacco specific nitrosamines (TSNAs) and/or nicotine. The tobacco flavor extract is suitable for use in an electronic smoking device to provide a tobacco taste for a user of the electronic smoking device. The method preserves volatile and semi-volatile flavor components that can be released during a low-temperature vaporization process occurring in the electronic smoking device.

A method for preparing a tobacco flavor extract from cured tobacco materials. The tobacco flavor extract has reduced level of tobacco specific nitrosamines (TSNAs) and/or nicotine. The tobacco flavor extract is suitable for use in an electronic smoking device to provide a tobacco taste for a user of the electronic smoking device. The method preserves volatile and semi-volatile flavor components that can be released during a low-temperature vaporization process occurring in the electronic smoking device.

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 method for preparing a wetted vaping product for use with a vaping device includes providing dried leaf matter having been dried to remove moisture content therefrom; one of wetting, soaking, and immersing the dried leaf matter in a solvent; rehydrating the leaf matter with the solvent to increase overall weight of the dried leaf matter at least 5% to 10%; and sizing the leaf matter before and/or after the act of wetting, soaking, and immersing to fit within the vaping device. Another method includes providing leaf matter containing plant oil; mixing the leaf matter and a liquid solvent by immersing and/or soaking the leaf matter with the liquid solvent in a sterile container for at least 30 days; extracting liquid from the mixture of leaf matter and the liquid solvent; and filtering the separated liquid to remove the leaf matter of 3.5 microns to larger from the separated liquid.