Abstract
Inspired by the emergence of natural deep eutectic solvents (DESs), we herein used thermogravimetry and pyrolysis-gas chromatography/mass spectrometry to probe the influence of six DESs (hydrogen bond acceptor=choline chloride, betaine, or l-proline; hydrogen bond donor=glycerol, 1,4-butanediol, or propylene glycol) on the release of volatiles from tobacco at 300 °C. DES treatment induced a 3.5–4.6% increase in second-stage weight loss and promoted the release of 28 aroma constituents (furans, aldehydes, ketones, and organic acids). Treatment with choline chloride-glycerol-propylene glycol increased the relative contents of the released 5-hydroxymethylfurfural and megastigmatrienone by factors of 1.2 and 3.6, respectively, whereas treatment with l-proline-glycerol promoted the release of 2,3-dihydro-3,5-dihydroxy-6-methyl-(4H)-pyran-4-one. Therefore, DES treatment facilitated the release of volatiles from tobacco powder and was inferred to be promising for the development of novel cigarette constituents.
Published Version
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