Ethyl maltol, vanillin, corylone and other conventional confectionery-related flavour chemicals dominate in some e-cigarette liquids labelled 'tobacco' flavoured.

Autor:	Omaiye EE; Department of Molecular, Cell and Systems Biology, University of California Riverside, Riverside, California, USA., Luo W; Department of Civil and Environmental Engineering, Portland State University, Portland, Oregon, USA., McWhirter KJ; Department of Civil and Environmental Engineering, Portland State University, Portland, Oregon, USA., Pankow JF; Department of Civil and Environmental Engineering, Portland State University, Portland, Oregon, USA., Talbot P; Department of Molecular, Cell and Systems Biology, University of California Riverside, Riverside, California, USA talbot@ucr.edu.
Jazyk:	angličtina
Zdroj:	Tobacco control [Tob Control] 2022 Nov; Vol. 31 (Suppl 3), pp. s238-s244.
DOI:	10.1136/tc-2022-057484
Abstrakt:	Background: The increased popularity of electronic cigarettes (e-cigarettes) has been linked to the abundance of flavoured products that are attractive to adolescents and young adults. In the last decade, e-cigarette designs have evolved through four generations that include modifications in battery power, e-cigarette liquid (e-liquid) reservoirs and atomiser units. E-liquids have likewise evolved in terms of solvent use/ratios, concentration and number of flavour chemicals, use of nicotine salts and acids, the recent increased use of synthetic cooling agents and the introduction of synthetic nicotine. Our current objective was to evaluate and compare the evolving composition of tobacco-flavoured e-liquids over the last 10 years. Methods: Our extensive database of flavour chemicals in e-liquids was used to identify trends and changes in flavour chemical composition and concentrations. Results: Tobacco-flavoured products purchased in 2010 and 2011 generally had very few flavour chemicals, and their concentrations were generally very low. In tobacco-flavoured refill fluids purchased in 2019 and Puff Bar Tobacco e-cigarettes, the total number and concentration of flavour chemicals were higher than expected. Products with total flavour chemicals >10 mg/mL contained one to five dominant flavour chemicals (>1 mg/mL). The most frequently used flavour chemicals in tobacco e-liquids were fruity and caramellic. Conclusions: There is a need for continuous surveillance of e-liquids, which are evolving in often subtle and harmful ways. Chemical constituents of tobacco flavours should be monitored as they clearly can be doctored by manufacturers to have a taste that would appeal to young users. Competing Interests: Competing interests: None declared. (© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
Databáze:	MEDLINE
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