Research output: Contribution to journal › Article › peer-review
Reducing toxic reactive carbonyl species in e-cigarette emissions : testing a harm-reduction strategy based on dicarbonyl trapping. / de Falco, Bruna; Petridis, Antonios; Paramasivan, Poornima; Troise, Antonio Dario; Scaloni, Andrea; Deeni, Yusuf; Stephens, W. Edryd; Fiore, Alberto.
In: RSC Advances, Vol. 10, No. 36, 05.06.2020, p. 21535-21544.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Reducing toxic reactive carbonyl species in e-cigarette emissions
T2 - testing a harm-reduction strategy based on dicarbonyl trapping
AU - de Falco, Bruna
AU - Petridis, Antonios
AU - Paramasivan, Poornima
AU - Troise, Antonio Dario
AU - Scaloni, Andrea
AU - Deeni, Yusuf
AU - Stephens, W. Edryd
AU - Fiore, Alberto
N1 - The Carnegie Trust for the Universities of Scotland is thanked for providing funding to support this research (Grant Reference 50408).
PY - 2020/6/5
Y1 - 2020/6/5
N2 - Reducing the concentration of reactive carbonyl species (RCS) in e-cigarette emissions represents a major goal to control their potentially harmful effects. Here, we adopted a novel strategy of trapping carbonyls present in e-cigarette emissions by adding polyphenols in e-liquid formulations. Our work showed that the addition of gallic acid, hydroxytyrosol and epigallocatechin gallate reduced the levels of carbonyls formed in the aerosols of vaped e-cigarettes, including formaldehyde, methylglyoxal and glyoxal. Liquid chromatography mass spectrometry analysis highlighted the formation of covalent adducts between aromatic rings and dicarbonyls in both e-liquids and vaped samples, suggesting that dicarbonyls were formed in the e-liquids as degradation products of propylene glycol and glycerol before vaping. Short-term cytotoxic analysis on two lung cellular models showed that dicarbonyl-polyphenol adducts are not cytotoxic, even though carbonyl trapping did not improve cell viability. Our work sheds lights on the ability of polyphenols to trap RCS in high carbonyl e-cigarette emissions, suggesting their potential value in commercial e-liquid formulations.
AB - Reducing the concentration of reactive carbonyl species (RCS) in e-cigarette emissions represents a major goal to control their potentially harmful effects. Here, we adopted a novel strategy of trapping carbonyls present in e-cigarette emissions by adding polyphenols in e-liquid formulations. Our work showed that the addition of gallic acid, hydroxytyrosol and epigallocatechin gallate reduced the levels of carbonyls formed in the aerosols of vaped e-cigarettes, including formaldehyde, methylglyoxal and glyoxal. Liquid chromatography mass spectrometry analysis highlighted the formation of covalent adducts between aromatic rings and dicarbonyls in both e-liquids and vaped samples, suggesting that dicarbonyls were formed in the e-liquids as degradation products of propylene glycol and glycerol before vaping. Short-term cytotoxic analysis on two lung cellular models showed that dicarbonyl-polyphenol adducts are not cytotoxic, even though carbonyl trapping did not improve cell viability. Our work sheds lights on the ability of polyphenols to trap RCS in high carbonyl e-cigarette emissions, suggesting their potential value in commercial e-liquid formulations.
U2 - 10.1039/D0RA02138E
DO - 10.1039/D0RA02138E
M3 - Article
VL - 10
SP - 21535
EP - 21544
JO - RSC Advances
JF - RSC Advances
SN - 2046-2069
IS - 36
ER -
Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
ID: 268642588