BAT has already generated a substantial amount of evidence about the risk profile of its vapour products, including conducting comprehensive analysis of a vapour product aerosol. Continuing the research, scientists recently published two studies in Frontiers of Chemistry, focusing on the aerosols of e-cigarette vapour. The studies continue to support e-cigarettes as less risky* alternatives to cigarettes, as the aerosols contain fewer toxicants.
The first study provided data on the transfer and potential formation of two substances, 2,4-butanedione (known as diacetyl or DA) and 2,3-pentanedione (known as acetyl propionyl or AP). Both have the potential to cause respiratory disease, and have been found in e-liquids and are also used as common food flavourings.
Furthermore, this research demonstrated that quantifiable levels of DA were formed from e-liquid base ingredients, vegetable glycerol and propylene glycol, when exposed to heating coil temperatures exceeding 293⁰C and 234⁰C, respectively. Heating of sugars and five-membered furanose compounds was found to generate DA, and should be a consideration for manufacturers when selecting flavour compounds for use in e-liquids.
Using a combination of targeted and untargeted chemical analysis techniques, researchers found that e-cigarette aerosols had significantly fewer harmful compounds than cigarette smoke.
Historically, over 6,500 compounds have been identified in cigarette smoke, whilst in this study aerosols from flavoured e-liquids were found to contain between 94 - 139 compounds and an unflavoured e-liquid contained 72 - 79 compounds.
Both studies support the potential of the vapour category as a reduced risk* alternative. At BAT, we are committed to building A Better Tomorrow™ by reducing the health impact of our business. Innovation based on robust science and Tobacco Harm Reduction is a key part of our transformation journey with the potential to positively impact public health.
1. McAdam K et al. (2021) Diacetyls and other ketones in e-cigarette aerosols: some important sources and contributing factors. Frontiers in Chemistry 9:742538. doi: 10.3389/fchem.2021.742538.
2. Margham J et al (2021) The chemical complexity of e-cigarette aerosols compared with the smoke from a tobacco burning cigarette. Frontiers in Chemistry 9:743060. doi: 10.3389/fchem.2021.743060.
* Based on the weight of evidence and assuming a complete switch from cigarette smoking. These products are not risk free and are addictive.
† Our products as sold in the US, including Vuse, Velo, Grizzly, Kodiak, and Camel Snus, are subject to FDA regulation and no reduced-risk claims will be made as to these products without agency clearance.