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Method for forming an aerosol-generating substrate with reduced amounts of tobacco-specific nitrosamines

An aerosol generation and specific technology, which can be used in the fields of tobacco, tobacco processing, and tobacco preparation, and can solve problems such as expensive and time-consuming

Active Publication Date: 2021-10-22
PHILIP MORRIS PROD SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process of treating tobacco plants is time consuming, expensive and must be done carefully to prevent the environment from being polluted by the chemicals used

Method used

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  • Method for forming an aerosol-generating substrate with reduced amounts of tobacco-specific nitrosamines
  • Method for forming an aerosol-generating substrate with reduced amounts of tobacco-specific nitrosamines
  • Method for forming an aerosol-generating substrate with reduced amounts of tobacco-specific nitrosamines

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] N-nitrosonornicotine (NNN) and 4-(methylnitrosamine)-1-(3-pyridyl)-1-butanone (NNK) at specified concentrations (380 and 613 nA, respectively g / ml) to three different liquid aerosol-generating matrices consisting of nicotine, glycerol, propylene glycol, and water (2:10:68:20, 2 :39:39:20 and 2:68:10:20 by weight). Aliquots of these solutions were placed in clear glass vials and irradiated with UV radiation (wavelength of 365 nm; nominal lamp power of 8 watts; lamp distance of 3 cm) for specified times (0, 15, 30, 60, 120 or 240 minutes). After irradiation, the samples were diluted ten-fold with water and analyzed for their nicotine, NNN and NNK content.

[0026] UV irradiation caused a time-dependent reduction of NNK and NNN in all three nicotine / glycerol / propylene glycol / water mixtures. Nicotine concentrations were not affected. Nitrosamine decay is approximately exponential with respect to irradiation time. The half-lives of NNN and NNK are in the range of 30-50 ...

example 2

[0028] A sample sheet of cast tobacco slurry having a thickness of 0.20 to 0.22 mm after drying to 195 to 200 g / m² was irradiated with UV light at a wavelength of 365 nm and an intensity of 4.5 mW / cm² for 150 minutes on each side . After further drying and cutting, irradiated cast leaf samples and non-irradiated controls were analyzed for NNK, NNN and nicotine content using mass spectrometry. The irradiated samples indicated no effect on nicotine levels, a 12% reduction in NNK content, and a 26% reduction in NNN content as compared to the control.

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PUM

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Abstract

A method of forming an aerosol-generating substrate is provided, the method comprising providing a liquid nicotine source comprising at least one tobacco-specific nitrosamine, mixing the liquid nicotine source with a solvent and at least one aerosol-forming agent to form an aerosol-generating substrate, and irradiating the aerosol-generating substrate with ultraviolet light to reduce the amount of the at least one tobacco-specific nitrosamine. Also provided is a method of forming an aerosol-generating substrate, the method comprising providing a tobacco slurry containing at least one tobacco-specific nitrosamine, irradiating the tobacco slurry with ultraviolet light to reduce the at least one tobacco-specific nitrosamine the amount of nitramine, and drying the tobacco slurry to form an aerosol-generating substrate.

Description

technical field [0001] The present invention relates to methods of forming aerosol-generating substrates with reduced amounts of tobacco-specific nitrosamines. Aerosol-generating substrates formed according to the present invention find particular application as substrates for electrical smoking systems. Background technique [0002] Electrically operated smoking systems that vaporize a liquid nicotine formulation to form an aerosol that is inhaled by a user are known in the art. For example, one known electrically operated smoking system includes a housing and a replaceable mouthpiece, wherein the housing includes a power source and circuitry. The mouthpiece includes a liquid storage portion, a wick having a first end extending into the liquid storage portion for contact with liquid therein, and a heating element for heating a second end of the wick. In use, liquid is transferred from the liquid storage portion towards the heating element by capillary action in the wick. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24B3/14A24B15/167A24B15/18A24F40/10
CPCA24B15/245A24B15/22A24B15/167A24F40/10A24B15/243
Inventor G·朗J·C·胡夫纳格尔
Owner PHILIP MORRIS PROD SA