Table 1.
Compounds | RIa | Techniquesb | ||||
---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | ||
Monoterpene Hydrocarbons | ||||||
α-Thujene | 938 | 1.79 | 1.38 | 1.08 | 0.99 | 1.27 |
α-Pinene | 939 | 9.64 | 7.87 | 7.21 | 6.03 | 5.9 |
Camphene | 953 | 0.19 | 0.17 | nd | 0.12 | 0.14 |
Sabinene | 972 | 17.22 | 16.38 | 18.81 | 15.65 | 20.39 |
β-Pinene | 981 | 6.43 | 4.93 | 6.42 | 3.05 | 2.98 |
β-Myrcene | 992 | 2.43 | 2.06 | 1.91 | 1.6 | 2.09 |
L-Phellandrene | 1007 | 0.6 | 0.53 | 0.44 | 0.33 | 0.53 |
Δ3-Carene | 1009 | 1.06 | 0.93 | 0.8 | 0.39 | 1 |
α-Terpinene | 1012 | 1.58 | 1.08 | 0.88 | 0.83 | 0.94 |
ρ-Cymene | 1027 | 1.2 | 0.75 | 0.73 | 0.54 | 0.9 |
Limonene | 1030 | 4.93 | 4.23 | 4.01 | 3.44 | 4.49 |
γ -Terpinene | 1074 | 2.52 | 1.86 | 1.63 | 1.44 | 1.58 |
(E)-Sabinene hydrate | 1073 | 1.34 | 1.08 | 1.36 | 0.84 | 1.13 |
α-Terpinolene | 1081 | 1.21 | 1.03 | 0.94 | 0.59 | 0.98 |
(Z)-trans Sabinene hydrate | 1110 | 1.37 | 1.04 | 1.27 | 0.79 | 1.03 |
Oxides | ||||||
1,8-Cineole | 1035 | 0.21 | nd | nd | nd | 0.17 |
Sesquiterpene Hydrocarbons | ||||||
α-Copaene | 1377 | 0.56 | 1.02 | 1.04 | nd | 0.53 |
Trans-β-Caryophyllene | 1415 | 0.25 | 0.25 | nd | 0.06 | 0.08 |
Trans-α-Bergamotene | 1431 | 0.3 | nd | nd | 0.07 | 0.17 |
β-Sesquiphellandrene | 1560 | nd | nd | nd | nd | 0.08 |
Germacrene-D | 1487 | 0.52 | 0.96 | 0.93 | 0.37 | 0.44 |
Bicyclogermacrene | 1496 | 0.15 | 0.26 | nd | 0.1 | 0.16 |
β-Bisabolene | 1498 | 0.15 | 0.2 | nd | 0.07 | 0.18 |
Aromatics | ||||||
Safrole | 1280 | 2.82 | 1.98 | 2.14 | 0.83 | 1 |
Eugenol | 1364 | 0.46 | 0.33 | 0.36 | 0.1 | 0.13 |
Methyl eugenol | 1407 | 0.83 | 1.41 | 1.63 | 0.85 | 0.68 |
Chavibetol (trans-isoeugenol) | 1447 | 0.95 | 0.63 | nd | 0.3 | 0.38 |
Methyl isoeugenol | 1454 | 0.33 | 0.26 | nd | 0.42 | 0.37 |
Myristicin | 1532 | 10.25 | 6.23 | 7.21 | 3.24 | 3.42 |
Elemicin | 1551 | 5.7 | 9.53 | 11.53 | 7.06 | 6.28 |
Methoxyeugenol | 1558 | 1.4 | 0.97 | 0.43 | 0.36 | 0.46 |
Trans-isoelemicin | 1570 | 0.43 | 0.41 | 0.47 | 1.34 | 1.03 |
Monoterpene Alcohols | ||||||
Linalool | 1100 | 0.25 | 0.18 | nd | 0.15 | 0.19 |
ρ-Menth-2-en-1-ol | 1124 | 0.21 | 0.18 | nd | 0.15 | 0.15 |
Cis ρ-2- menthen-1-ol | 1142 | 0.45 | nd | nd | 0.1 | 0.1 |
Terpinen-4-ol | 1175 | 3.21 | 2.8 | 3.52 | 2.97 | 2.9 |
α-Terpineol | 1195 | 0.49 | 0.36 | 0.46 | 0.26 | 0.34 |
Piperitol isomer | 1207 | nd | nd | nd | 0.07 | nd |
Geranyl linalool isomer | 2198 | 0.24 | 0.24 | 1.17 | nd | 0.33 |
Sesquiterpene Alcohols | ||||||
Guaiol | 1599 | 0.13 | 0.24 | nd | 0.15 | nd |
Esters | ||||||
Trans-Sabinene hydrate acetate | 1180 | 0.12 | nd | nd | 0.18 | 0.18 |
Cis-Sabinene hydrate acetate | 1184 | 0.19 | nd | 0.37 | 0.11 | 0.14 |
Endobornyl acetate | 1285 | 0.13 | nd | 3 | nd | 0.11 |
α-Terpinyl acetate | 1353 | 0.38 | 0.49 | 0.54 | 0.22 | 0.27 |
Citronellyl acetate | 1358 | 0.17 | 0.2 | nd | 0.08 | – |
Neryl acetate | 1381 | 0.3 | 0.37 | 0.69 | 0.15 | 0.21 |
Tetradecanoic acid, ethyl ester | 1796 | 0.37 | nd | nd | 0.06 | 0.08 |
9-Octadecenoic acid, ethyl ester | 2193 | 0.38 | 0.5 | 0.47 | 0.9 | 0.75 |
Ketones | ||||||
α-Ionone | 1437 | nd | 0.8 | nd | 0.16 | nd |
Acids | ||||||
Dodecanoic acid | 1595 | 0.44 | 0.69 | nd | 0.39 | 0.49 |
Myristic acid | 1767 | 8.13 | 13.02 | 7.29 | 19.38 | 17.48 |
Pentadecanoic acid | 1857 | 0.95 | 1.29 | 0.64 | 9.82 | 6.48 |
Oleic acid | 2173 | 1.08 | 1.64 | 1.18 | 3.33 | 3.28 |
Total identified compounds (%) | 96.44 | 92.76 | 92.56 | 90.43 | 94.39 | |
Total monoterpene hydrocarbons (%) | 53.51 | 45.32 | 47.49 | 36.63 | 45.35 | |
Total oxygenated compounds (%) | 41 | 44.75 | 43.10 | 53.13 | 47.4 | |
Extraction time (min) | 4320 | 10 | 25 | 10 | 25 | |
β-pinene/(Myristicin + Safrole) | 0.49 | 0.60 | 0.69 | 0.75 | 0.67 | |
Oleoresin yield (%)c | 9.63 ± 0.01a | 4.55 ± 0.01e | 5.15 ± 0.03d | 8.26 ± 0.01b | 7.98 ± 0.01c |
nd not detected
aRetention indices using a RTX-5 column and n-alkanes (C9–C22) as references
bExtraction techniques: (1) Maceration, (2) Ultrasound assisted extraction at 20 % of the maximal power for 10 min, (3) Ultrasound assisted extraction at 20 % of the maximal power for 25 min, (4) Ultrasound assisted extraction at 40 % of the maximal power for 10 min, (5) Ultrasound assisted extraction at 40 % of the maximal power for 25 min
cMean values ± SD of triplicates followed by different superscript letters are different at P < 0.05 according to Duncan’s test