阅读说明：本技术 包含均质化植物性材料的加热式气溶胶生成制品 (Heated aerosol-generating article comprising homogenized vegetable material ) 是由 A·阿吉特库马尔 C·德弗莱尔 G·朗 于 2018-05-22 设计创作，主要内容包括：本文提供了一种加热式气溶胶生成制品,其包含气溶胶生成基质。所述气溶胶生成基质包含均质化植物性材料,所述均质化植物性材料包含植物材料、气溶胶形成剂和碱性pH调节剂。所述均质化植物性材料具有以干重计大于或等于约60重量％且以干重计小于或等于约90重量％的植物材料含量。所述均质化植物性材料具有大于或等于约6.0且小于或等于约8.0的pH。(Provided herein is a heated aerosol-generating article comprising an aerosol-generating substrate. The aerosol-generating substrate comprises a homogenized botanical material comprising a plant material, an aerosol former and an alkaline pH modifier. The homogenized vegetable material has a plant material content greater than or equal to about 60 weight percent on a dry weight basis and less than or equal to about 90 weight percent on a dry weight basis. The homogenized vegetable material has a pH greater than or equal to about 6.0 and less than or equal to about 8.0.)

1. A heated aerosol-generating article comprising an aerosol-generating substrate comprising homogenized vegetable material comprising particulate plant material, an aerosol-former, and an alkaline pH adjuster, wherein the homogenized vegetable material has a particulate plant material content of greater than or equal to about 60 wt% by dry weight and less than or equal to about 90 wt% by dry weight, and wherein the homogenized vegetable material has a pH of greater than or equal to about 6.0 and less than or equal to about 8.0.

2. A heated aerosol-generating article according to claim 1 in which the homogenized botanical material is homogenized tobacco material and the particulate botanical material is tobacco.

3. A heated aerosol-generating article according to claim 2 having a total nicotine content of less than or equal to about 10 mg.

4. A heated aerosol-generating article according to any of claims 1 to 3 in which the homogenized vegetable material has a pH of between about 6.0 and about 7.5.

5. A heated aerosol-generating article according to any of claims 1 to 4 in which the basic pH adjuster comprises one or more basic inorganic salts selected from: alkali metal carbonates, alkaline earth metal carbonates, alkali metal bicarbonates, alkaline earth metal bicarbonates, alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal phosphates, alkaline earth metal phosphates, alkali metal monohydrogen phosphates and alkaline earth metal monohydrogen phosphates.

6. A heated aerosol-generating article according to any of claims 1 to 5 in which the basic pH adjuster has a water solubility of less than about 0.1g/100mL of water at 20 ℃ and 1 atm.

7. A heated aerosol-generating article according to any of claims 1 to 6 in which the homogenized vegetable material has an aerosol former content of between about 5 and about 25 wt% on a dry weight basis.

8. A heated aerosol-generating article according to any of claims 1 to 7 in which the homogenized vegetable material further comprises a lipid having a melting point of between about 50 ℃ and about 150 ℃.

9. A heated aerosol-generating article according to any of claims 1 to 8 in which the aerosol-generating substrate comprises a sheet of the homogenized plant material.

10. A heated aerosol-generating article according to any of claims 1 to 9 comprising an aerosol-generating rod comprising a sheet of gathered homogenized plant material encased by a wrapper.

11. A heated aerosol-generating article according to claim 10 in which the aerosol-generating rod comprises a cast sheet of gathered homogenized plant material encased by a wrapper.

12. A heated aerosol-generating article according to any of claims 1 to 11 for use in an electrically-operated aerosol-generating system.

13. A heated aerosol-generating article according to any of claims 1 to 11 further comprising a combustible heat source, in which the aerosol-generating substrate is located downstream of the combustible heat source.

Examples

Cast sheets of homogenized tobacco material having the composition shown in table 1 were prepared, wherein the values shown are weight percentages on a dry weight basis:

TABLE 1

To prepare cast sheets of homogenized tobacco material of sample 1, tobacco powder, glycerin, guar gum and cellulose fibers were combined with water to produce an aqueous slurry. The aqueous slurry was cast onto a support surface and then dried to form a cast sheet of homogenized tobacco material of sample 1.

To prepare cast sheets of homogenized tobacco material of samples 2, 3 and 4, tobacco powder, glycerin, guar gum, cellulose fiber and alkaline pH adjuster were combined with water to produce an aqueous slurry. The aqueous slurry was cast onto a support surface and then dried to form cast sheets of homogenized tobacco material of samples 2, 3 and 4.

To prepare cast sheets of homogenized tobacco material of samples 5 and 6, tobacco powder, glycerin, guar gum, cellulose fiber, lipids, and alkaline pH adjusting agent were combined with water to produce an aqueous slurry. The aqueous slurry was cast onto a support surface and then dried to form cast sheets of homogenized tobacco material of samples 5 and 6.

The pH of the aqueous slurry used to form the cast sheets of homogenized tobacco material of samples 1 to 6 was measured using a pH electrode.

The pH of the cast sheets of homogenized tobacco material of samples 1 to 6 was measured by dispersing 5g of cast sheets of homogenized tobacco material in 5g of water and measuring the pH of the dispersion using a pH electrode.

The resulting pH values are shown in table 2 below.

the nicotine content of the methanol extract of samples of cast sheets of homogenized tobacco material of samples 1 to 6 was measured using a gas chromatography flame ionization detector (GC-FID).

Cast sheets of homogenized tobacco material of samples 1-6 were gathered and wrapped with a wrapper to form aerosol-generating rods. A heated aerosol-generating article for use in an electrically-operated aerosol-generating system is formed comprising an aerosol-generating substrate comprising an aerosol-generating rod.

The nicotine content of the aerosol generated by electrically heating the heated aerosol-generating article to a maximum temperature of 350 ℃ under canadian health sector smoking conditions was determined using GC-FID. The nicotine transfer rate of the heated aerosol-generating article is calculated from the nicotine content of the aerosol, the nicotine content of the cast sheet of homogenized tobacco material and the amount of homogenized tobacco material in the aerosol-generating substrate of the heated aerosol-generating article. The nicotine transfer rate is defined as (amount of nicotine delivered in the aerosol upon heating)/(amount of nicotine in the cast sheet of homogenized tobacco material agglomerated in the aerosol-generating substrate of the aerosol-generating article before heating). The results are shown in table 2 below:

^*Relative to sample 1

TABLE 2

As shown in table 2, the inclusion of an alkaline pH modifier in the cast sheets of homogenized tobacco material of samples 2 to 6 increased the pH of the cast sheets of homogenized tobacco material of samples 2 to 6 to between 5.5 and 8. As shown in table 2, this advantageously significantly improves the nicotine transfer rate of heated aerosol-generating articles comprising cast sheets of homogenized tobacco material of samples 2 to 6 compared to heated aerosol-generating articles comprising cast sheets of homogenized tobacco material of reference sample 1, which do not comprise an alkaline pH adjuster and have a pH of less than 5.5.

Increasing the pH of the cast sheets of homogenized tobacco material of samples 2 to 6 to between 5.5 and 8 also increased the nicotine loss during the preparation of the cast sheets of homogenized tobacco material of samples 2 to 6 compared to the cast sheets of homogenized tobacco material of reference sample 1 not comprising an alkaline pH adjusting agent. However, the increase in nicotine transfer rate of heated aerosol-generating articles comprising cast sheets of homogenized tobacco material of samples 2 to 6 exceeded the increase in nicotine loss during the preparation of cast sheets of homogenized tobacco material of samples 2 to 6. This advantageously results in an overall increased aerosol nicotine level of the heated aerosol-generating article comprising the cast sheet of homogenized tobacco material of samples 2 to 6 compared to the heated aerosol-generating article comprising the cast sheet of homogenized tobacco material of reference sample 1.

As shown in table 2, the inclusion of lipids in the cast sheets of homogenized tobacco material of samples 5 and 6 advantageously further improved the nicotine transfer rate of heated aerosol-generating articles comprising cast sheets of homogenized tobacco material of samples 5 and 6 compared to heated aerosol-generating articles comprising cast sheets of homogenized tobacco material of samples 2 to 4 which did not comprise lipids.

The specific embodiments described above are intended to be illustrative of the invention. However, other embodiments may be made without departing from the scope of the invention, which is defined in the claims and it is understood that the specific embodiments described above are not intended to be limiting.