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All issues Volume 21 (2014) Parasite, 21 (2014) 33 Full HTML
Open Access

Table 1.

Chemical composition of essential oils from leaves of Cymbopogon citratus (DC), Ocimum canum Sims and Ocimum basilicum L.

Compounds ID RIa RI Litta Mass percentages (%)b
C. citratus O. canum O. basilicum
Hydrocarbon monoterpenes
 α-thujene MS, RI 928 924 – 0.17 0.09
 α-pinene MS, RI 933 932 – 1.66 0.51
 Camphene MS, RI 945 946 – 0.27
 Sabinene MS, RI 967 968 – 0.49 0.34
 β-pinene MS, RI 973 972 – 1.94 0.96
 Myrcene MS, RI 984 983 11.43 0.97 0.99
 α-terpinene MS, RI 1011 1009 – 0.32 0.18
 p-cymene MS, RI 1017 1014 – 0.95 0.34
 Limonene MS, RI 1023 1024 0.04 ~3c ~1c
 β-phellandrene MS, RI 1026 1021 – – –
 (Z)-β-ocimene MS, RI 1028 1024 0.27 0.11 0.08
 (E)-β-ocimene MS, RI 1040 1037 – 2.44 1.18
 γ-terpinene MS, RI 1051 1051 0.22 0.70 0.38
 Terpinolene MS, RI 1081 1080 – 0.38 0.13
 Perillene MS 1088 1063 – 0.14 –
 (E)-β-epoxyocimene MS 1126 – – 2.04 –
Oxygenated monoterpenes
 1,8-cineole MS, RI 1027 1022 0.22 <29.04c <13.95c
 5-Isopropyl-2-methylbicyclo[3.1.0]hexan-2-ol MS, RI 1056 1050 – 0.80 0.10
 cis-linalool oxide (furanoid) MS, RI 1058 1062 0.12
 Fenchone MS, RI 1072 1071 – 2.87 0.64
 trans-linalool oxide (furanoid) MS 1074 – – 0.07 0.10
 Linalool MS, RI 1092 1086 0.72 19.07 51.86
 Isocitral MS 1123 – 0.30 – –
 Camphor MS, RI 1124 1123 – 2.00 0.13
 (E)-chrysanthenal MS 1128 – 0.17 – –
 Citronellal MS, RI 1132 1134 0.15 – –
 (Z)-chrysanthenol MS, RI 1143 1153 1.17 – –
 δ-terpineol MS 1151 – – 0.45 0.23
 (E)-chrysanthenol MS 1161 – 1.62 – –
 Terpinen-4-ol MS, RI 1168 1165 – 7.53 2.98
 α-terpineol MS, RI 1177 1175 – 2.31 1.32
 Fenchyl acetate (endo) MS, RI 1208 1200 – 0.12 0.11
 Neral MS, RI 1228 1216 30.21 – 0.64
 Geraniol MS, RI 1249 1238 8.19 – 0.18
 Geranial MS, RI 1259 1246 32.82 – 0.79
 Isobornyl acetate MS, RI 1269 1275 – 0.17 0.13
 Neryl acetate MS, RI 1359 1344 0.46 – –
Hydrocarbon sesquiterpenes
 α-copaene MS, RI 1376 1376 – 0.21 0.07
 β-elemene MS, RI 1388 1386 – 0.67 0.39
 β-caryophyllene MS, RI 1419 1420 0.05 0.42 0.4
 trans-α-bergamotene MS, RI 1434 1433 0.07 3.49 1.39
 Aromadendrene MS, RI 1436 1446 – 0.22 0.14
 α-humulene MS, RI 1453 1449 – 0.51 0.18
 epi-bicyclosesquiphellandrene MS 1459 – – 0.17 0.13
 Germacrene-D MS, RI 1477 1476 – 0.76 0.49
 Bicyclogermacrene MS, RI 1492 1491 – 0.30 0.21
 δ-guaiene MS, RI 1500 1495 – 0.31 0.18
 γ-cadinene MS, RI 1508 1511 – 0.70 0.50
 Calamenene MS, RI 1511 1513 – 0.07 0.04
 δ-cadinene MS, RI 1514 1516 – 0.30 0.11
 (E)-α-bisabolene MS 1532 – – 0.97 0.26
Oxygenated sesquiterpenes
 Spathulenol MS, RI 1566 1567 – 0.12 0.08
Aromatics
 Eugenol MS, RI 1334 1330 0.13 8.01 8.39
 1,2-dimethoxy-4-propenylbenzene MS, RI 1369 1373 – 0.24 0.09
Others
 (Z)-3-hexen-1-ol MS, RI 834 839 – 0.17 0.24
 6-methyl-hept-5-en-2-one MS, RI 964 964 0.96 – –
 Oct-1-en-3-ol MS, RI 965 964 – 0.15 0.26
 (Z)-3-hexen-1-yl acetate MS, RI 987 987 – 0.2 –
 Octyl acetate MS, RI 1193 1187 – 0.11 0.08
 Undecan-2-one MS, RI 1276 1274 0.17 – –
 Tridecan-2-one MS, RI 1474 1478 0.10 – –
a

Retention index on HP-1 column.

b

Percentage calculated by internal standardization. The following RRF were used for calculation: 1.03 (monoterpenes), 0.98 (sesquiterpenes), 1.30 (alcohols, ketones, and aldehydes), 1.59 (esters), 0.99 (aromatic hydrocarbons), and 1.28 (ethers), with nonane as an internal standard.

c

On both columns, limonene and 1,8-cineole are coeluted; however, the latter is the main component with a proportion of limonene estimated to be inferior to 1/10 of that of 1,8-cineole.

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