Table 1.
Relative percentage composition of the clove essential oil and eugenol 99% in different phases.
| Compound | Retention time (min) | KI measured | KI reference60 | ΔKI (%) | Eugenol 99% (EUG) | Clove essential oil (CEO) | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Liquid phase (%) | Volatile phase (%) | After diffusion (%) | Liquid phase (%) | Volatile phase (%) | After diffusion (%) | |||||
| Eugenol | 30.55 | 1371 | 1356 | 1.11 | 100.00 | 100.00 | 100.00 | 74.25 | 57.78 | 100.00 |
| β-Caryophyllene | 33.24 | 1415 | 1418 | 0.21 | — | — | — | 13.55 | 37.08 | — |
| α-Caryophyllene | 35.01 | 1445 | 1452 | 0.49 | — | — | — | 2.50 | 4.11 | — |
| Epizonarene* | 39.06 | 1513 | 1501 | 0.80 | — | — | — | 0.47 | 1.03 | — |
| Caryophyllene oxide* | 42.35 | 1570 | 1582 | 0.76 | — | — | — | 0.60 | — | — |
| Hexadecanol* | 58.24 | 1869 | 1880 | 0.59 | — | — | — | 8.62 | — | — |
KI: Kovats index, ΔKI: percent difference of measured values of KI compared to reference values. *Tentatively identified.