Table 2.
Chemical composition of plant essential oils based on total ion chromatogram of GC-MS.
| Compound Name | RI ‡ | PA | ML | CR (I) | CR (II) | DA (II) | IM * |
|---|---|---|---|---|---|---|---|
| α-Thujene | 924 | 0.5 | 0.4 | MS, RI | |||
| α-Pinene | 928 | 3.8 | 0.1 | 1.5 | 0.5 | 0.3 | Std |
| Camphene | 943 | 3.8 | 0.1 | Std | |||
| Sabinene | 969 | 0.3 | 24.9 | 1.6 | MS, RI | ||
| β-Pinene | 972 | 2.3 | 0.1 | 1.8 | 0.2 | 0.6 | Std |
| 6-Methyl-5-heptene-2-one | 984 | 0.6 | MS, RI | ||||
| β-Myrcene | 988 | 0.7 | 0.1 | 2.9 | 2.5 | MS, RI | |
| 3-Octanol | 993 | 0.2 | MS, RI | ||||
| α-Phellandrene | 1002 | 0.1 | 0.1 | MS, RI | |||
| 3-Carene | 1008 | 0.4 | MS, RI | ||||
| α-Terpinene | 1015 | 0.3 | 1.1 | 0.1 | 28.2 | MS, RI | |
| p-Cymene | 1023 | 2.0 | 0.6 | 15.8 | MS, RI | ||
| Limonene | 1028 | 10.9 | 3.9 | 23.1 | 92.7 | 0.2 | Std |
| Eucalyptol | 1031 | 12.1 | 1.9 | 0.8 | Std | ||
| cis-β-Ocimene | 1036 | 0.2 | 0.1 | 1.1 | 0.3 | Std | |
| trans-β-Ocimene | 1047 | 0.1 | 4.9 | Std | |||
| γ-Terpinene | 1058 | 2.3 | 2.1 | 0.2 | 0.5 | MS, RI | |
| cis-Sabinene hydrate | 1066 | 0.3 | 0.1 | 0.2 | MS, RI | ||
| Terpinolene | 1088 | 0.3 | 0.6 | 0.1 | MS, RI | ||
| Dehydro-p-cymene | 1091 | 0.3 | MS, RI | ||||
| trans-Sabinene hydrate | 1098 | 0.2 | MS, RI | ||||
| Linalool | 1100 | 0.3 | 0.2 | 15.6 | 0.2 | Std | |
| cis-p-Menth-2-ene-1-ol | 1121 | 0.2 | 0.2 | MS, RI | |||
| Phenylacetonitrile | 1141 | 1.3 | MS, RI | ||||
| trans-p-Menth-2-ene-1-ol | 1142 | 0.2 | 1.6 | MS, RI | |||
| Camphor | 1147 | 19.7 | Std | ||||
| β-Citronellal | 1152 | 1.5 | 0.1 | MS, RI | |||
| Borneol | 1167 | 2.5 | 3.2 | Std | |||
| 4-Terpineol | 1179 | 0.3 | 0.2 | 5.1 | 0.2 | Std | |
| α-Terpineol | 1192 | 0.4 | 0.2 | 1.6 | 0.1 | Std | |
| 1,6-Dihydrocarveol | 1195 | 0.6 | MS, RI | ||||
| cis-Dihydrocarvone | 1196 | 1.4 | MS, RI | ||||
| trans-Carveol | 1219 | 0.3 | MS, RI | ||||
| cis-Geraniol | 1228 | 0.4 | MS, RI | ||||
| cis-Carveol | 1232 | 0.2 | MS, RI | ||||
| β-Citral | 1241 | 1.7 | MS, RI | ||||
| Carvone | 1247 | 82.6 | Std | ||||
| cis-Ascaridole | 1247 | 6.3 | MS, RI | ||||
| trans-Geraniol | 1254 | 0.2 | MS, RI | ||||
| Piperitone | 1256 | 0.2 | 1.5 | MS, RI | |||
| cis-Carvenone oxide | 1264 | 0.1 | 3.6 | MS, RI | |||
| α-Citral | 1270 | 2.2 | MS, RI | ||||
| trans-Carvone oxide | 1278 | 0.2 | MS, RI | ||||
| Bornyl acetate | 1288 | 4.2 | Std | ||||
| trans-Ascaridole | 1312 | 38.8 | MS, RI | ||||
| α-Terpinyl acetate | 1352 | 1.6 | MS, RI | ||||
| α-Copaene | 1381 | 0.4 | Std | ||||
| α-Gurjunene | 1416 | 0.2 | MS, RI | ||||
| trans-β-Caryophyllene | 1427 | 5.5 | 1.0 | 1.4 | 0.2 | MS, RI | |
| trans-α-Bergamotene | 1440 | 0.3 | MS, RI | ||||
| α-Humulene | 1461 | 6.3 | 0.2 | MS, RI | |||
| trans-β-Farnesene | 1458 | 0.2 | 0.2 | MS, RI | |||
| allo-Aromadendrene | 1468 | 1.1 | MS, RI | ||||
| Germacrene D | 1487 | 0.3 | MS, RI | ||||
| Viridiflorene | 1502 | 2.2 | MS, RI | ||||
| trans-α-Farnesene | 1509 | 0.2 | MS, RI | ||||
| β-Bisabolene | 1513 | 0.2 | MS, RI | ||||
| cis-Lachnophyllum ester | 1514 | 0.5 | MS, RI | ||||
| γ-Cadinene | 1520 | 0.6 | MS, RI | ||||
| δ-Cadinene | 1529 | 1.4 | MS, RI | ||||
| Caryophyllene oxide | 1588 | 1.6 | 1.0 | 0.1 | MS, RI | ||
| Ledol | 1600 | 8.1 | MS, RI | ||||
| δ-Cadinol | 1647 | 0.8 | MS, RI | ||||
| Monoterpenes | 28.0 | 4.3 | 65.0 | 98.4 | 45.8 | ||
| Oxygenated monoterpenes | 41.6 | 91.3 | 29.0 | 0.6 | 52.7 | ||
| Sesquiterpenes | 17.7 | 1.6 | 1.9 | 0.6 | 0.0 | ||
| Oxygenated sesquiterpenes | 10.5 | 1.0 | 0.1 | ||||
| Others | 0.2 | 2.4 | |||||
| Total Identified | 97.8 | 98.4 | 98.2 | 99.5 | 98.6 |
PA = Perovskia atriplicifolia; ML = Mentha longifolia; CR(I) = Citrus reticulata (fruit peels); CR(II) = C. reticulata (leaves); DA(II) = Dysphania ambrosioides (fruiting aerial parts). * In the identification method IM; MS = identification based on mass spectrum comparison with NIST-2008 library, RI = identification based on comparison of retention index with published data and Std = identification of compounds was made by comparing mass spectrum, retention index with published data as well as through the injection of standard compounds. ‡ Compounds listed are in order of elution from a DB-5 GC column. The retention index (RI) of a separated compound was calculated relative to C9–C26 retention time on the same parameter used for EOs analysis. The data shown in the table is the percentage compositions of different EOs where the values < 0.5% are approximate.