Table 1.
Chemical composition of tested Essential Oils (Eos).
| N | Components | LRI | AI | Pelargonium graveolens | Mentha × piperita | Melaleuca alternifolia | |||
|---|---|---|---|---|---|---|---|---|---|
| AREA% ± SEM | SI/MS | AREA% ± SEM | SI/MS | AREA% ± SEM | SI/MS | ||||
| 1 | propanoic acid, ethylester | 712 | 714 | 0.12 ± 0.012 | 86 | 0.11 ± 0.009 | 91 | ||
| 2 | α-thujene | 924 | 926 | 0.04 ± 0.001 | 91 | 0.88 ± 0.020 | 91 | ||
| 3 | α-pinene | 933 | 933 | 0.59 ± 0.050 | 97 | 1.40 ± 0.010 | 97 | 2.14 ± 0.120 | 96 |
| 4 | 1-methyl-3-(2-methyl-1-propenyl)-cyclopentane | 972 | 972 | 0.18 ± 0.050 | 80 | ||||
| 5 | β-pinene | 975 | 975 | 1.43 ± 0.500 | 96 | ||||
| 6 | trans-carene | 977 | 977 | 7.72 ± 2.110 | 91 | ||||
| 7 | β-myrcene | 987 | 988 | 0.13 ± 0.100 | 91 | ||||
| 8 | 2,6-dimethyl- 2,6-octadiene | 991 | 990 | 1.01 ± 0.090 | 96 | ||||
| 9 | 3-octanol | 995 | 995 | 0.13 ± 0.150 | 90 | ||||
| 10 | o-cymene | 1021 | 1021 | 0.10 ± 0.005 | 91 | 0.44 ± 0.050 | 95 | ||
| 11 | p-cymene | 1025 | 1025 | 2.21 ± 0.990 | 95 | ||||
| 12 | (Z)−β-ocimene | 1027 | 1027 | 0.10 ± 0.007 | 95 | ||||
| 13 | 3-isopropenyl-5,5-dimethyl-cyclopentene | 1029 | 1028 | 1.68 ± 0.030 | 81 | ||||
| 14 | 1,8-cineole | 1031 | 1031 | 9.07 ± 2.090 | 98 | 2.13 ± 0.700 | 98 | ||
| 15 | limonene | 1033 | 1033 | 0.22 ± 0.040 | 94 | ||||
| 16 | β-phellandrene | 1035 | 1035 | 0.53 ± 0.010 | 91 | 0.23 ± 0.005 | 91 | ||
| 17 | γ-terpinene a | 1058 | 1060 | 0.11 ± 0.002 | 96 | 17.18 ± 2.120 | 94 | ||
| 18 | cis-linalool oxide | 1070 | 1074 | 0.37 ± 0.001 | 90 | ||||
| 19 | α−terpinolene | 1081 | 1082 | 3.80 ± 0.020 | 96 | ||||
| 20 | linalol | 1099 | 1098 | 4.68 ± 0.850 | 95 | ||||
| 21 | rose oxide | 1112 | 1112 | 1.67 ± 0.050 | 90 | ||||
| 22 | cis-p-menth-2-en-1-ol | 1119 | 1119 | 0.33 ± 0.005 | 93 | ||||
| 23 | p-menthone | 1154 | 1154 | 2.19 ± 0.970 | 98 | ||||
| 24 | iso-menthone a | 1164 | 1165 | 4.61 ± 1.700 | 98 | 23.99 ± 2.490 | 97 | ||
| 25 | menthol a | 1168 | 1169 | 0.14 + 0.003 | 91 | 35.60 + 1.760 | 91 | ||
| 26 | terpinen-4-ol a | 1174 | 1174 | 33.28 + 2.750 | 83 | ||||
| 27 | isopulegone | 1177 | 1177 | 0.16 + 0.002 | 96 | ||||
| 28 | neo-iso-menthol | 1187 | 1188 | 9.33 + 1.100 | 96 | ||||
| 29 | α-terpineol | 1191 | 1190 | 0.45 + 0.090 | 80 | 0.59 + 0.010 | 87 | 2.84 + 0.350 | 86 |
| 30 | citronellol a | 1220 | 1221 | 26.15 ± 3.260 | 98 | ||||
| 31 | pulegone | 1230 | 1236 | 0.11 ± 0.010 | 83 | 1.21 ± 0.400 | 98 | ||
| 32 | citral | 1240 | 1240 | 0.70 ± 0.001 | 96 | ||||
| 33 | piperitone | 1250 | 1253 | 1.20 ± 0.030 | 96 | ||||
| 34 | geraniol a | 1254 | 1254 | 11.70 ± 1.020 | 96 | ||||
| 35 | citronellyl formate | 1272 | 1275 | 6.85 ± 0.920 | 96 | ||||
| 36 | geraniol formate | 1280 | 1281 | 2.69 ± 0.100 | 86 | ||||
| 37 | menthyl acetate | 1294 | 1294 | 0.40 ± 0.005 | 91 | ||||
| 38 | 1,5,5-trimethyl-6-methylen-cyclohexene | 1335 | 1338 | 0.33 ± 0.070 | 86 | ||||
| 39 | citronellyl acetate | 1358 | 1355 | 0.48 ± 0.050 | 94 | ||||
| 40 | neryl acetate | 1364 | 1367 | 1.47 ± 0.250 | 86 | ||||
| 41 | isoledene | 1376 | 1373 | 1.07 ± 0.090 | 95 | ||||
| 42 | β-bourbonene | 1380 | 1382 | 1.80 ± 0.140 | 95 | ||||
| 43 | langifolene | 1405 | 1405 | 0.12 ± 0.009 | 90 | ||||
| 44 | 1-H-indene-1-ethylideneocta hydro-7a-methyl-(1z,3a.a,7a.b) |
1410 | 1409 | 0.64 ± 0.040 | 95 | ||||
| 45 | α-guajene | 1413 | 1413 | 0.39 ± 0.001 | 98 | ||||
| 46 | (E)-caryophyllene | 1420 | 1419 | 1.63 ± 0.020 | 99 | 2.13 ± 0.950 | 99 | 1.09 ± 0.013 | 99 |
| 47 | β-copaene | 1428 | 1428 | 1.06 ± 0.015 | 99 | ||||
| 48 | neryl propionate | 1430 | 1430 | 0.15 ± 0.023 | 80 | ||||
| 49 | aromadendrene | 1440 | 1440 | 0.70 ± 0.090 | 99 | 4.41 ± 1.090 | 99 | ||
| 50 | citronellyl propionate | 1445 | 1445 | 1.06 ± 0.030 | 64 | ||||
| 51 | humulene | 1452 | 1452 | 0.38 ± 0.001 | 97 | 0.12 ± 0.090 | 95 | 0.20 ± 0.001 | 97 |
| 52 | α−amorphene | 1455 | 1455 | 0.87 ± 0.025 | 96 | 0.32 ± 0.015 | 99 | ||
| 53 | (E)-β-farnesene | 1459 | 1459 | 0.10 ± 0.080 | 95 | ||||
| 54 | γ−muurolene | 1474 | 1474 | 0.73 ± 0.055 | 90 | 0.15 ± 0.090 | 83 | ||
| 55 | epi-bicyclosesquiphellandrene | 1482 | 1482 | 1.00 ± 0.078 | 87 | ||||
| 56 | 4,11-selinadiene | 1483 | 1485 | 0.18 ± 0.074 | 92 | ||||
| 57 | δ−selinene | 1490 | 1493 | 0.17 ± 0.007 | 97 | ||||
| 58 | ledene | 1495 | 1495 | 3.93 ± 1.670 | 95 | ||||
| 59 | δ−cadiene | 1524 | 1524 | 2.98 ± 0.430 | 95 | ||||
| 60 | α-panasinsene | 1527 | 1527 | 0.16 + 0.009 | 93 | ||||
| 61 | α−calacorene | 1542 | 1540 | 0.11 ± 0.001 | 91 | ||||
| 62 | geranyl butyrate | 1554 | 1555 | 1.49 ± 0.012 | 96 | ||||
| 63 | neo-isolongifolene | 1558 | 1558 | 0.18 ± 0.004 | 83 | ||||
| 64 | spathulenol | 1578 | 1578 | 0.35 ± 0.002 | 91 | 0.11 ± 0.008 | 99 | ||
| 65 | phenylethyl tiglate | 1584 | 1584 | 1.48 + 0.015 | 90 | ||||
| 66 | globulol | 1585 | 1585 | 0.54 ± 0.001 | 98 | ||||
| 67 | caryophyllene oxyde | 1592 | 1592 | 0.28 ± 0.070 | 95 | ||||
| 68 | γ−eudesmol a | 1620 | 1619 | 7.02 ± 2.050 | 99 | ||||
| 69 | (E)-citronellyl tiglate | 1665 | 1667 | 0.38 ± 0.009 | 91 | ||||
| 70 | geranyl tiglate | 1701 | 1700 | 1.57 ± 0.080 | 91 | ||||
| % Characterized | 89.40 | 96.22 | 82.78 | ||||||
| Others | 10.60 | 3.78 | 17.22 | ||||||
a: standard compounds. Linear retention index (LRI) on HP-5MS column was experimentally determined using a homologous series of C7–C40 alkanes standard mixture [24]. Arithmetic index (AI) was taken from Adams 4th Ed. (2007) [25] and/or the NIST 2017 Database [26]. Similarity index/mass spectrum (SI/MS) was compared with data reported on NIST 2017 Database and were determined as reported by Koo et al. [27], and Wan et al. [28]. Relative percentage values are means of three determinations with a structural equation modeling (SEM) in all cases below 10%.