Table 1.
Volatile constituents’ identification of the LGEO and MF-LGEO using GC-MS.
| S/N | Compound | RI a | LRI b | Area% | Identification Method c |
|
|---|---|---|---|---|---|---|
| LGEO | MF-LGEO | |||||
| 1 | 6-Methyl-5-heptene-2-one | 983 | 985 | 0.94 | 0.59 | RI, MS |
| 2 | β-Myrcene | 992 | 991 | 3.61 | 2.76 | RI, MS, STD |
| 3 | Z-β-Ocimene | 1040 | 1037 | 0.64 | 0.52 | RI, MS |
| 4 | E-β-Ocimene | 1051 | 1050 | 0.34 | 0.70 | RI, MS |
| 5 | γ-Terpinene | 1063 | 1059 | 0.48 | 0.81 | RI, MS |
| 6 | Linalool | 1100 | 1096 | 1.42 | 0.98 | RI, MS, STD |
| 7 | Perillene | 1105 | 1103 | 0.31 | - | RI, MS |
| 8 | trans-Pinocarveol | 1140 | 1139 | 0.42 | 0.42 | RI, MS |
| 9 | Camphor | 1145 | 1146 | 0.47 | - | RI, MS |
| 10 | Citronellal | 1156 | 1153 | 0.34 | - | RI, MS |
| 11 | Isoneral | 1171 | 1170 | 1.35 | 0.85 | RI, MS |
| 12 | Rose furan oxide | 1180 | 1177 | 0.65 | 0.36 | RI, MS |
| 13 | Isogeranial | 1189 | 1185 | 2.07 | 1.44 | RI, MS |
| 14 | Decanal | 1204 | 1201 | - | 1.57 | RI, MS |
| 15 | Citronellol | 1228 | 1225 | 2.10 | 1.42 | RI, MS, STD |
| 16 | Neral | 1240 | 1238 | 26.91 | 28.95 | RI, MS, STD |
| 17 | Geraniol | 1258 | 1255 | 9.69 | 7.97 | RI, MS, STD |
| 18 | Geranial | 1270 | 1267 | 30.73 | 35.48 | RI, MS, STD |
| 19 | Dihydrolinalool acetate | 1279 | 1275 | 1.41 | 1.88 | RI, MS |
| 20 | Carvacrol | 1298 | 1299 | 2.61 | 3.95 | RI, MS, STD |
| 21 | Nerolic acid | 1337 | 1340 | 0.97 | - | RI, MS |
| 22 | Geranic acid | 1351 | 1355 | 1.14 | 0.51 | RI, MS |
| 23 | Neryl acetate | 1365 | 1361 | 2.19 | 1.36 | RI, MS |
| 24 | Geranyl acetate | 1384 | 1383 | 5.06 | 4.55 | RI, MS |
| 25 | Bergamotene (α-trans-) | 1438 | 1434 | 0.33 | - | RI, MS |
| 26 | α-Farnesene | 1508 | 1505 | 0.43 | - | RI, MS |
| 27 | Caryophyllene oxide | 1582 | 1583 | 0.47 | - | RI, MS |
| 28 | Selin-6-en-4α-ol | 1633 | 1636 | 0.65 | 0.46 | RI, MS |
| Total | - | - | 97.73 | 97.53 | - | |
RI a: Retention indices calculated on DB-5 column using alkanes standards. LRI b: Retention indices according to the literature. c Confirmed by comparison with the retention indices, the mass spectrum of the authentic compounds, and the NIST mass spectra library data. LGEO: lemongrass emulsion of essential oil; MF-LGEO: microfluidizing emulsion of lemongrass essential oil.