Table 3.
Composition (expressed as %) of plant essential oils based on total ion chromatogram of GC-MS.
| RI | Compound | CAS Number |
M. longifolia | S. imbricata | E. bonariensis | E. canadensis | A. altissima |
|---|---|---|---|---|---|---|---|
| 929 | α-Pinene * | 80-56-8 | 0.4 | 1.1 | |||
| 970 | Sabinene | 3387-41-5 | 0.3 | 0.6 | 1.1 | ||
| 972 | β-Pinene * | 127-91-3 | 0.5 | ||||
| 990 | β-Myrcene * | 123-35-3 | 2.0 | 0.7 | 0.1 | 0.7 | tr |
| 1003 | α-Phellandrene | 99-83-2 | 0.2 | 0.1 | |||
| 1008 | 3-Carene | 13466-78-9 | 0.3 | ||||
| 1026 | Limonene * | 138-86-3 | 4.6 | 2.2 | 2.1 | 28.4 | 0.5 |
| 1028 | Eucalyptol * | 470-82-6 | 1.1 | 2.3 | 0.5 | 1.7 | |
| 1038 | cis-β-Ocimene * | 3338-55-4 | 0.5 | ||||
| 1047 | trans-β-Ocimene * | 3779-61-1 | 0.1 | 0.8 | 5.0 | ||
| 1056 | γ-Terpinene | 99-85-4 | tr | 0.2 | 0.1 | ||
| 1086 | Terpinolene | 586-62-9 | 0.1 | 0.1 | 0.1 | ||
| 1099 | Linalool * | 78-70-6 | 0.3 | 0.2 | 0.3 | ||
| 1103 | Nonanal | 124-19-6 | 0.5 | 0.5 | |||
| 1141 | Camphor * | 76-22-2 | 0.1 | 20.4 | tr | 0.1 | |
| 1163 | Borneol * | 507-70-0 | 0.2 | 1.4 | 0.1 | ||
| 1175 | 4-Terpineol | 562-74-3 | 0.8 | tr | 0.1 | ||
| 1189 | α-Terpineol | 98-55-5 | 0.1 | 0.3 | tr | 0.1 | |
| 1194 | cis-Dihydrocarvone | 3792-53-8 | 1.1 | ||||
| 1237 | Pulegone * | 89-82-7 | 4.1 | ||||
| 1242 | Carvone * | 99-49-0 | tr | 39.9 | 0.1 | 0.5 | |
| 1252 | Piperitone | 89-81-6 | 6.9 | 0.1 | |||
| 1260 | Piperitone oxide | 57130-28-6 | 45.5 | ||||
| 1272 | Isopiperitenone | 529-01-1 | 0.2 | ||||
| 1285 | Bornyl acetate | 76-49-3 | 0.2 | ||||
| 1290 | Piperitenone oxide # | 2.6 | |||||
| 1293 | Thymol * | 89-83-8 | 0.2 | 0.2 | tr | 0.9 | |
| 1298 | 2-Hydroxypiperitone | 490-03-9 | 0.4 | 0.2 | 0.3 | ||
| 1312 | 2-Methoxy-4-vinylphenol | 7786-61-0 | 2.1 | 0.2 | |||
| 1337 | δ-Elemene | 20307-84-0 | 0.2 | ||||
| 1342 | α-Guaiene | 3691-12-1 | 0.2 | ||||
| 1349 | α-Cubebene | 17699-14-8 | 0.1 | 0.2 | 0.2 | ||
| 1358 | Eugenol * | 97-53-0 | 0.2 | 29.9 | |||
| 1378 | Piperitenone oxide * | 35178-55-3 | 30.1 | 0.3 | |||
| 1389 | β-Cubebene | 13744-15-5 | 0.2 | 0.2 | |||
| 1391 | β-Elemen | 515-13-9 | 0.1 | 0.2 | 0.2 | 0.4 | |
| 1404 | Methyleugenol | 93-15-2 | 0.6 | 20.3 | |||
| 1414 | p-Menthane-1,2,3-triol | 22555-61-9 | 3.6 | ||||
| 1418 | trans-β-Caryophyllene * | 87-44-5 | 1.8 | 0.3 | 1.9 | 0.7 | 2.8 |
| 1436 | trans-α-Bergamotene | 13474-59-4 | 0.2 | 3.6 | |||
| 1452 | α-Humulene | 6753-98-6 | 1.1 | 0.3 | 0.6 | ||
| 1458 | trans-β-Farnesene | 18794-84-8 | 10.2 | 2.5 | |||
| 1476 | γ-Muurolene | 30021-74-0 | 0.2 | 0.2 | |||
| 1480 | Germacrene D | 23986-74-5 | 0.3 | 4.6 | 6.4 | 6.5 | |
| 1485 | β-Selinene | 17066-67-0 | 3.9 | 0.2 | |||
| 1496 | Capilline | 520-74-1 | 3.7 | 0.6 | 23.7 | ||
| 1508 | trans-α-Farnesene | 502-61-4 | 0.9 | 0.3 | 1.3 | ||
| 1516 | cis-Lachnophyllum ester | 505-01-1 | 0.1 | 24.9 | 16.3 | ||
| 1523 | δ-Cadinene | 483-76-1 | 0.4 | ||||
| 1526 | Matricaria ester | 505-02-2 | 43.1 | 31.7 | |||
| 1549 | Hedycaryol | 21657-90-9 | 2.6 | ||||
| 1563 | Nerolidol | 142-50-7 | 0.3 | 0.3 | |||
| 1576 | Spathulenol | 77171-55-2 | 0.3 | 2.0 | tr | 0.4 | |
| 1582 | Caryophyllene oxide | 1139-30-6 | 0.4 | 0.3 | |||
| 1646 | α-Eudesmol | 473-16-5 | 0.3 | 1.2 | |||
| 1654 | Juniper camphor | 473-04-1 | 3.5 | ||||
| 1715 | Pentadecanal | 2765-11-9 | 0.4 | 0.2 | |||
| 1817 | Hexadecanal | 629-80-1 | 1.9 | ||||
| Total Identified | 98.7 | 94.4 | 98.2 | 98.8 | 95.5 |
RI: retention index of a separated compound, which was calculated relative to the retention time of C9–C26 hydrocarbons using DB-5 gas chromatographic column, and the same parameters were applied for analyses of essential oils. CAS Chemical Abstract Service.* Identification of compounds was verified by comparing mass spectrum and retention index with those recorded from the injection of standard compounds. # CAS number of this Piperitenone oxide was not found. The data shown in table are approximate relative compositions, expressed as %, where tr stands for trace amount < 0.1%.