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Table 1
Chemical characterisation of essential oil from leaves of Ocimum campechianum.
| No. | Componenta | Area%b | RI expc | RI litd |
|---|---|---|---|---|
| 1 | α-pinene | 0.7 | 929 | 932 |
| 2 | camphene | 0.1 | 944 | 946 |
| 3 | sabinene | 0.3 | 967 | 969 |
| 4 | β-pinene | 1.2 | 973 | 974 |
| 5 | myrcene | 0.3 | 987 | 988 |
| 6 | p-cymene | 0.5 | 1021 | 1020 |
| 7 | o-cymene | 0.4 | 1025 | 1023 |
| 8 | 1,8-cineole | 11.4 | 1028 | 1026 |
| 9 | cis-ocimene | 8.0 | 1032 | 1032 |
| 10 | linalool | 2.9 | 1101 | 1095 |
| 11 | allo-ocimene | 0.1 | 1126 | 1128 |
| 12 | α-terpineol | 0.4 | 1193 | 1186 |
| 13 | δ-elemene | 0.6 | 1337 | 1335 |
| 14 | eugenol | 18.6 | 1363 | 1356 |
| 15 | α-copaene | 0.5 | 1376 | 1374 |
| 16 | elemene isomer | 0.4 | 1383 | – |
| 17 | β-elemene | 8.9 | 1388 | 1389 |
| 18 | β-caryophyllene | 17.0 | 1410 | 1416 |
| 19 | γ-elemene | 0.5 | 1427 | 1434 |
| 20 | trans-α-bergamotene | 0.4 | 1431 | 1435 |
| 21 | α-caryophyllene | 4.5 | 1451 | 1452 |
| 22 | allo-aromadendrene | 1.5 | 1455 | 1458 |
| 23 | germacrene D | 0.4 | 1477 | 1484 |
| 24 | β-selinene | 1.8 | 1484 | 1489 |
| 25 | viridiflorene | 0.2 | 1489 | 1696 |
| 26 | bicyclogermacrene | 9.0 | 1490 | 1500 |
| 27 | germacrene A | 1.4 | 1500 | 1508 |
| 28 | germacrene B | 1.4 | 1556 | 1559 |
| 29 | spathulenol | 1.9 | 1576 | 1577 |
| 30 | caryophyllene oxide | 1.7 | 1581 | 1582 |
| Total identified | 97.2 |
a
Components are listed in order of elution and their nomenclature is in accordance with the NIST 05 (National Institute of Standards and Technology) Mass Spectral Library.
d
RI lit: linear retention indices [2].
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