Table 1.
Chemical composition, as determined by GC–MS, of unheated and heated S. hortensis essential oil samples with retention Kovats indices (KI) calculated in this study and reported in literature27 (Satureja hortensis essential oil was denoted as SHEO and heated essential oils at different temperatures and periods indicated as SHEOx-y, where x is the temperature of treatment (ºC), and y is the heating time in hours (SHEO160-0.5, SHEO175-0.5, SHEO175-2.5, and SHEO190-2.5).
| Nr. Crt | KI calc/lit | Compound | SHEO (%) | SHEO160-0.5 (%) | SHEO175-0.5 (%) | SHEO175-2.5 (%) | SHEO190-2.5 (%) |
|---|---|---|---|---|---|---|---|
| 1 | 930/930 | ⍺-Thujene | 1.93 | 1.47 | 0.96 | 0.18 | n.d |
| 2 | 939/939 | ⍺-Pinene | 1.49 | 0.94 | 0.79 | 0.19 | n.d |
| 3 | 979/975 | Sabinene | 0.66 | 0.71 | 0.47 | n.d | n.d |
| 4 | 983/979 | β-Pinene | 2.32 | 1.72 | 1.43 | 0.26 | n.d |
| 5 | 1010/1002 | α-Phellandrene | 0.63 | 0.32 | n.d | n.d | n.d |
| 6 | 1082/1088 | α-Terpinolene | 5 | 3.8 | 3.29 | 1.08 | n.d |
| 7 | 1098/1091 | p-Cymene | 8.05 | 7.32 | 7.71 | 5.49 | 1.33 |
| 8 | 1014/1029 | Limonene | 0.77 | 0.43 | n.d | n.d | n.d |
| 9 | 1066/1059 | γ-Terpinene | 42.35 | 36.19 | 34.82 | 12.85 | n.d |
| 10 | 1073/1070 | cis-sabinene hydrate | 0.87 | 0.79 | 0.58 | n.d | n.d |
| 11 | 1180/1177 | Terpinen-4-ol | t | 0.36 | 0.05 | 0.41 | n.d |
| 12 | 1250/1244 | Carvacrol methyl ether | 0.09 | 0.23 | 0.26 | 0.32 | n.d |
| 13 | 1295/1299 | Carvacrol | 32.83 | 42.3 | 45.73 | 71.27 | 91.36 |
| 14 | 1415/1408 | β-Caryophyllene | 2.22 | 2.43 | 2.88 | 5.24 | 4.97 |
| 15 | 1510/1505 | β-Bisabolene | 0.79 | 0.32 | 0.27 | 0.16 | 2.34 |
| 16 | 1521/1419 | Isocaryophyllene | t | 0.67 | 0.76 | 1.91 | n.d |
| 17 | 1516/1507 | cis-α-bisabolene | t | t | t | 0.15 | n.d |
| 18 | 1587/1583 | Caryophyllene oxide | t | t | t | 0.49 | n.d |