Aerosol-generating compositions and uses thereof

Abstract

The invention relates to an aerosol-generating composition comprising a solid aerosol-generating material comprising a dried extract from a flavour- and/or active-containing plant material suspended or dissolved in a liquid aerosol-generating material. The aerosol-generating composition may be used to generate an aerosol. For example, the aerosol-generating composition may be used in non-combustible aerosol-provision systems. The invention also relates to aerosol-provision systems comprising the aerosol-generating composition, and methods of providing the aerosol-generating composition.

1 . An aerosol-generating composition comprising a solid aerosol-generating material comprising a dried extract from a flavour- and/or active-containing plant material suspended or dissolved in a liquid aerosol-generating material. 
     
     
         2 . An aerosol-generating composition as claimed in  claim 1 , wherein the liquid aerosol-generating material comprises one or more aerosol-former material. 
     
     
         3 . An aerosol-generating composition as claimed in  claim 2 , wherein the one or more aerosol-former material is selected from the group consisting of: glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,3-butylene glycol, erythritol, meso-Erythritol, ethyl vanillate, ethyl laurate, a diethyl suberate, triethyl citrate, triacetin, a diacetin mixture, benzyl benzoate, benzyl phenyl acetate, tributyrin, lauryl acetate, lauric acid, myristic acid, and propylene carbonate. 
     
     
         4 . An aerosol-generating composition as claimed in  claim 1 , comprising from about 5 to about 35 mg solid aerosol-generating material per ml of the aerosol-generating composition. 
     
     
         5 . An aerosol-generating composition as claimed in  claim 4 , comprising from about 15 to about 25 mg solid aerosol-generating material per ml of the aerosol-generating composition. 
     
     
         6 . An aerosol-generating composition as claimed in  claim 1 , wherein the solid aerosol-generating material is formed by drying a precursor composition comprising an extract from a flavour- and/or active-containing plant material. 
     
     
         7 . An aerosol-generating composition as claimed in  claim 6 , wherein the precursor material is dried to a moisture content of from about 0 to about 5% (calculated on a wet weight basis). 
     
     
         8 . An aerosol-generating composition as claimed in  claim 6 , the precursor material comprising from about 10 to 100% by weight of the extract from a flavour- or active-containing plant material. 
     
     
         9 . An aerosol-generating composition as claimed in  claim 6 , the precursor material comprising from about 1 to about 36 wt % aerosol-former material. 
     
     
         10 . An aerosol-generating composition as claimed in  claim 6 , the precursor material comprising from 0 to about 40% by weight of an excipient. 
     
     
         11 . An aerosol-generating composition as claimed in  claim 10 , wherein the excipient is one or more selected from the group consisting of include mannitol, sucrose, trehalose, lactose, sorbitol, raffinose, maltose, Dextran 10, Dextran 70, Dextran 90, maltodextrin, gelatin, agar, cyclodextrin, PEG 2000-6000, (PVP 10k). 
     
     
         12 . An aerosol-generating composition as claimed in  claim 6 , the precursor material comprising a liquid suspension comprising particles with an average particle size of no greater than about 1 mm, when measured by sieving. 
     
     
         13 . An aerosol-generating composition as claimed in  claim 1 , wherein the plant material is selected from the group consisting of tobacco,  eucalyptus , star anise, cocoa and hemp. 
     
     
         14 . An aerosol-generating composition as claimed in  claim 1 , wherein the extract from a flavour- or active-containing plant material is an aqueous extract. 
     
     
         15 . An aerosol-generating composition as claimed in  claim 1 , wherein the extract from a flavour- or active-containing plant material is an aqueous tobacco extract. 
     
     
         16 . An aerosol-generating composition as claimed in  claim 1 , wherein the solid aerosol-generating material comprises from about 40 to about 99% by weight tobacco solids. 
     
     
         17 . An aerosol-generating composition as claimed in  claim 1 , wherein the solid aerosol-generating material is in the form of particles with a maximum particle size of about 1 mm, when measured by sieving. 
     
     
         18 . An aerosol-generating composition as claimed in  claim 1  for use in an aerosol provision system. 
     
     
         19 . An article comprising a solid aerosol-generating material comprising a dried extract from a flavour- and/or active-containing plant material suspended or dissolved in a liquid aerosol-generating material. 
     
     
         20 . An article, comprising the aerosol-generating composition as claimed in  claim 1 . 
     
     
         21 . A non-combustible aerosol-provision system comprising an aerosol-generating composition as claimed in  claim 1 . 
     
     
         22 . A non-combustible aerosol-provision system as claimed in  claim 21 , wherein system is vaping device or electronic nicotine delivery system. 
     
     
         23 . A non-combustible aerosol-provision system as claimed in  claim 21 , wherein system is a Hybrid delivery system comprising a further aerosol-generating material. 
     
     
         24 . A method of providing an aerosol-generating composition comprising:
 drying a precursor material comprising an extract from a flavour- and/or active-containing plant material to form a solid aerosol-generating material; and   suspending or dissolving the solid aerosol-generating material in a liquid aerosol-generating material.   
     
     
         25 . A method as claimed in  claim 24 , wherein the precursor material is dried by spray-drying or freeze-drying. 
     
     
         26 . A method as claimed in  claim 24 , further comprising adjusting the particle size of the solid aerosol-generating material to a maximum size of about 1 mm, when measured by sieving. 
     
     
         27 . A method as claimed in  claim 24 , further comprising adjusting the particle size of any solid material in the precursor material to a maximum size of about 1 mm, when measured by sieving.