Table 2.
Chemical composition and oil yields of Cymbopogon species
| KI exp a | KI lit b | ID c | Compounds d |
Cymbopogon citratus
|
Cymbopogon giganteus
|
Cymbopogon schoenanthus
|
|---|---|---|---|---|---|---|
| % | % | % | ||||
| 978 |
974 |
MS, RI |
Sulcatone |
0.5 |
|
|
| 982 |
988 |
MS, RI |
Myrcene |
12.4 |
|
|
| 984 |
988 |
MS, RI |
2,3-Dehydro-1,8-cineole |
|
0.1 |
0.1 |
| 995 |
1001 |
MS, RI |
δ-2-Carene |
|
0.1 |
15.5 |
| 998 |
1002 |
MS, RI |
α-Phellandrene |
|
|
0.2 |
| 1009 |
1014 |
MS, RI |
α-Terpinene |
|
|
0.2 |
| 1017 |
1020 |
MS, RI |
p-Cymene |
|
0.5 |
0.1 |
| 1020 |
1024 |
MS, RI |
Limonene |
|
9.6 |
3.6 |
| 1029 |
1032 |
MS, RI |
Z-β-Ocimene |
0.3 |
|
0.1 |
| 1039 |
1044 |
MS, RI |
E-β-Ocimene |
0.2 |
|
0.1 |
| 1081 |
1083 |
MS, RI |
L-Fenchone |
|
|
0.2 |
| 1082 |
1082 |
MS, RI |
m-Cymenene |
|
0.2 |
|
| 1085 |
1090 |
MS, RI |
6,7-Epoxymyrcene |
0.2 |
|
|
| 1093 |
1095 |
MS, RI |
Linalool |
1.1 |
|
|
| 1114 |
1118 |
MS, RI |
Z-p-menth-2-en-1-ol |
|
|
1.4 |
| 1116 |
1119 |
MS, RI |
E
-
p
-Mentha-2,8-dienol |
|
19.3 |
|
| 1129 |
1133 |
MS, RI |
Z
-
p
-Mentha-2,8-dienol |
|
10.2 |
|
| 1132 |
1136 |
MS, RI |
E-p-menth-2-en-1-ol |
|
|
0.7 |
| 1138 |
1144 |
MS, RI |
Neo-Isopulegol |
|
0.1 |
|
| 1145 |
1148 |
MS, RI |
Citronellal |
0.1 |
0.7 |
|
| 1148 |
|
MS |
4-Isopropenylcyclohexanone |
|
0.4 |
|
| 1160 |
1166 |
MS, RI |
p-mentha-1,5-dien-8-ol |
|
|
0.1 |
| 1168 |
1173 |
MS, RI |
Rose furan epoxide |
0.2 |
|
|
| 1180 |
1179 |
MS, RI |
p-Cymen-8-ol |
|
|
0.1 |
| 1183 |
1186 |
MS, RI |
α-Terpineol |
|
|
1.5 |
| 1183 |
1187 |
MS, RI |
E
-p-Mentha-1(7),8-dien-2-ol |
|
19.6 |
|
| 1188 |
1195 |
MS, RI |
Z-Piperitol |
|
|
0.3 |
| 1194 |
|
MS |
p-Menth-6-en-2,3-diol |
|
3.2 |
|
| 1201 |
1209 |
MS, RI |
E-Piperitol |
|
|
0.2 |
| 1212 |
1215 |
MS, RI |
E-Carveol |
|
6.0 |
|
| 1216 |
1224 |
MS, RI |
2,3-Epoxyneral |
0.1 |
|
|
| 1224 |
1226 |
MS, RI |
Z
-Carveol |
|
17.0 |
|
| 1225 |
1227 |
MS, RI |
Z-p-Mentha-1(7),8-dien-2-ol |
|
2.1 |
|
| 1237 |
1235 |
MS, RI |
Neral |
33.1 |
|
|
| 1237 |
1239 |
MS, RI |
Carvone |
|
3.2 |
|
| 1253 |
1249 |
MS, RI |
Piperitone |
|
0.1 |
58.9 |
| 1257 |
1249 |
MS, RI |
Geraniol |
1.0 |
|
|
| 1266 |
1269 |
MS, RI |
Perilla aldehyde |
|
0.8 |
|
| 1268 |
1264 |
MS, RI |
Geranial |
44.3 |
|
|
| 1286 |
1293 |
MS, RI |
2-Undecanone |
0.1 |
|
|
| 1351 |
1359 |
MS, RI |
Geranic acid |
0.1 |
|
|
| 1376 |
1379 |
MS, RI |
Geranyl acetate |
0.8 |
|
|
| 1382 |
1389 |
MS, RI |
β-Elemene |
|
|
0.4 |
| 1408 |
1417 |
MS, RI |
E-Caryophyllene |
0.1 |
|
1.1 |
| 1421 |
1431 |
MS, RI |
β-Gurjunene |
|
|
0.1 |
| 1443 |
1452 |
MS, RI |
α-Humulene |
|
|
0.1 |
| 1486 |
1495 |
MS, RI |
2-Tridecanone |
0.1 |
|
|
| 1490 |
1500 |
MS, RI |
α-Muurolene |
|
|
0.1 |
| 1503 |
1513 |
MS, RI |
γ-Cadinene |
|
|
0.1 |
| 1513 |
1522 |
MS, RI |
δ-Cadinene |
|
|
0.4 |
| 1540 |
1546 |
MS, RI |
Elemol |
|
|
5.3 |
| 1571 |
1582 |
MS, RI |
Caryophyllene oxide |
0.1 |
0.1 |
|
| 1595 |
1607 |
MS, RI |
5-Epi-7-epi-α-eudesmol |
|
|
0.3 |
| 1609 |
1622 |
MS, RI |
10-Epi-γ-eudesmol |
|
|
0.2 |
| 1609 |
1615 |
MS, RI |
Selina-6-en-4-ol |
0.4 |
|
|
| 1636 |
1640 |
MS, RI |
Phenyl ethyl hexanoate |
|
0.1 |
|
| 1623 |
1630 |
MS, RI |
γ-Eudesmol |
|
|
1.1 |
| 1626 |
1629 |
MS, RI |
Eremoligenol |
|
|
1.9 |
| 1634 |
1640 |
MS, RI |
Hinesol |
|
|
0.7 |
| 1643 |
1649 |
MS, RI |
β-Eudesmol |
|
|
1.2 |
| 1646 |
1652 |
MS, RI |
α-Eudesmol |
|
|
2.1 |
| |
|
|
Yields |
1.7 |
1.4 |
2.6 |
| Total identified | 95.2 | 93.4 | 98.4 |
aKIexp = retention indices are determined using n-alkanes (C7-C17).
bKIlit = retention indices of reference compounds from literature.
cID = Identification methods; MS = comparison of the mass spectrum with those of the computer mass libraries, and Adams (2007); RI = comparison of calculated RI with those reported in the literature.
dCompounds are listed in order of their retention time; the names and the percentages of main compounds are indicated in bold.