Research Article
Determination of Lactones in Wines by Headspace Solid-Phase Microextraction and Gas Chromatography Coupled with Mass Spectrometry
Table 2
Retention time, molecular weight and enthalpy of vaporization [
31,
32].
| Compound | Retention time (min) | Molecular weight (g/mol) | (KJ/mol) |
| -Butyrolactone | 15.97 | 86.04 | | -Hexalactone | 17.09 | 114.14 | | -Heptalactone (IS) | 18.60 | 128.17 | | Whiskey-lactone I (trans-whiskey-lactone) | 19.73 | 156.22 | 48.36 | -Octalactone | 20.31 | 142.20 | | Whiskey-lactone II (cis-whiskey-lactone) | 20.74 | 156.22 | 48.36 | -Nonalactone | 21.67 | 156.22 | | -Decalactone | 23.14 | 170.25 | | 3,4-Dimethylphenol (IS) | 23.86 | 122.16 | | -Decalactone | 24.01 | 170.25 | | -Undecalactone | 24.73 | 184.28 | |
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Enthalpy of sublimation.
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