Heated aerosol-generating article comprising homogenised botanical material
A heated aerosol-generating article is provided, including an aerosol-generating substrate, the aerosol-generating substrate including a homogenised botanical material comprising particulate plant material, an aerosol former, and a basic pH modifier; and the homogenised botanical material has a particulate plant material content of greater than or equal to about 60% by weight on a dry weight basis and less than or equal to about 90% by weight on a dry weight basis; and the homogenised botanical material has a pH greater than or equal to about 6.0 and less than or equal to about 8.0.
1 . A heatable aerosol-generating article, comprising:
an aerosol-generating substrate, the aerosol-generating substrate comprising a sheet of homogenised tobacco material comprising particulate tobacco material having an average particle size of between 0.03 mm and 0.12 mm, an aerosol former, and a basic pH modifier,
wherein the homogenised tobacco material has a particulate tobacco material content of greater than or equal to about 60% by weight on a dry weight basis and less than or equal to about 90% by weight on a dry weight basis,
wherein the homogenised tobacco material has a pH greater than or equal to about 6.0 and less than or equal to about 7.5,
wherein the basic pH modifier is magnesium hydroxide and/or calcium hydroxide,
wherein the homogenized tobacco material further comprises a lipid selected from the group consisting of a fully saturated triglyceride, an alkali metal salt of a saturated fatty acid, and alkaline earth metal salts of saturated fatty acids, and
wherein the lipid content is between about 1% and about 10% on a dry weight basis.
2 . The heatable aerosol-generating article according to claim 1 , wherein the heatable aerosol-generating article has a total nicotine content of less than or equal to about 10 mg.
3 . The heatable aerosol-generating article according to claim 1 , wherein the basic pH modifier further comprises one or more basic inorganic salts selected from the group consisting of alkali metal carbonates, alkaline earth metal carbonates, alkali metal hydrogen carbonates, alkaline earth metal hydrogen carbonates, alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal phosphates, alkaline earth metal phosphates, alkali metal phosphates, alkaline earth metal phosphates, alkali metal monohydrogen phosphates, and alkaline earth metal monohydrogen phosphates.
4 . The heatable aerosol-generating article according to claim 1 , wherein the basic pH modifier has a solubility in water of less than about 0.1 g/100 mL water at 20° C. and 1 atm.
5 . The heatable aerosol-generating article according to claim 1 , wherein the homogenised tobacco material has an aerosol former content of between about 5% and about 25% by weight on a dry weight basis.
6 . The heatable aerosol-generating article according to claim 1 , further comprising an aerosol-generating rod comprising a gathered sheet of the homogenised tobacco material circumscribed by a wrapper.
7 . The heatable aerosol-generating article according to claim 6 , wherein the aerosol-generating rod further comprises a gathered cast sheet of the homogenised tobacco material circumscribed by a wrapper.
8 . An electrically-operated aerosol-generating system comprising the heatable aerosol-generating article according to claim 1 .
9 . The heatable aerosol-generating article according to claim 1 , further comprising a combustible heat source, wherein the aerosol-generating substrate is disposed downstream of the combustible heat source.
10 . The heatable aerosol-generating article according to claim 6 , wherein the gathered sheet of homogenised tobacco material extends along an entire length of the aerosol-generating rod and across an entire transverse cross-sectional area of the aerosol-generating rod.
11 . The heatable aerosol-generating article according to claim 1 , wherein the basic pH modifier further comprises magnesium carbonate, calcium carbonate, magnesium hydrogen carbonate, magnesium phosphate, calcium phosphate, or calcium monohydrogen phosphate.
12 . The heatable aerosol-generating article according to claim 1 , wherein the homogenized tobacco material has a nicotine transfer yield that is at least about 15% higher than the transfer yield of a reference homogenized tobacco material that does not comprise a basic pH modifier.