Table 1.
Chemical composition of pennyroyal EO assessed by GC analysis.
| Retention Time (min) | Area | m/z Predicted * | Compounds | Relative % |
|---|---|---|---|---|
| 13.76 | 285,520.68 | 136.13 | α-Pinene | 0.50 |
| 15.36 | 13,893.17 | 100.09 | 2,5-Diethyltetrahydrofuran | 0.02 |
| 19.01 | 209,964.64 | 136.13 | β-Pinene | 0.37 |
| 19.87 | 54,199.40 | 136.13 | Sabinene | 0.09 |
| 22.68 | 115,020.48 | 136.13 | β-Myrcene | 0.20 |
| 23.24 | 9218.27 | 136.13 | p-Mentha-1(7),8-diene | 0.02 |
| 25.40 | 157,870.05 | 136.13 | Limonene | 0.27 |
| 26.29 | 92,843.29 | 154.14 | 1,8-Cineole | 0.16 |
| 29.07 | 5981.18 | 136.13 | γ-Terpinene | 0.01 |
| 29.46 | 5959.16 | 128.12 | 3-Octanone | 0.01 |
| 30.55 | 15,695.05 | 164.34 | p-Cymene | 0.03 |
| 31.52 | 6537.28 | 136.13 | α-Terpinolene | 0.01 |
| 34.99 | 13,341.94 | 112.09 | 3-Methyl-Cyclohexanone | 0.02 |
| 35.32 | 14,539.98 | 172.15 | Octan-3-yl Acetate | 0.03 |
| 39.11 | 432,642.07 | 130.14 | 3-Octanol | 0.75 |
| 45.12 | 131,858.94 | 154.14 | Menthone | 0.23 |
| 46.01 | 12,943.67 | 150.11 | Menthofuran | 0.02 |
| 47.02 | 2,646,297.16 | 154.14 | Isomenthone | 4.60 |
| 48.64 | 95,801.61 | 152.12 | Camphor | 0.17 |
| 48.99 | 13,603.15 | 204.19 | β-Bourbonene | 0.02 |
| 49.64 | 9923.48 | 154.14 | Linalool | 0.02 |
| 50.19 | 9195.44 | 204.19 | β-Cubebene | 0.02 |
| 52.35 | 309,997.70 | 152.12 | cis-Isopulegone | 0.54 |
| 53.14 | 359,242.06 | 152.12 | trans-Isopulegone | 0.62 |
| 53.87 | 20,479.81 | 154.14 | Terpinen-4-ol | 0.04 |
| 54.28 | 108,658.39 | 204.19 + 168.15 |
trans-β-Caryophyllene + p-Menth-3-en-8-ol |
0.19 |
| 57.50 | 49,804,964.30 | 152.12 | Pulegone | 86.64 |
| 58.94 | 160,304.10 | 204.19 | α-Humulene | 0.28 |
| 59.71 | 100,746.80 | 154.14 | α-Terpineol | 0.18 |
| 60.02 | 18,054.61 | 202.17 | Dehydro-Aromadendrene | 0.03 |
| 61.43 | 68,102.24 | 204.19 | D-Germacrene | 0.12 |
| 61.72 | 24,673.92 | 168.12 | cis-Piperitone Epoxide | 0.04 |
| 62.39 | 40,006.84 | 152.12 | Piperitone | 0.07 |
| 63.60 | 6533.06 | 156.15 | Citronellol | 0.01 |
| 63.99 | 11,083.13 | 204.19 | Δ-Cadinene | 0.02 |
| 65.56 | 6698.69 | 152.12 | Myrtenol | 0.01 |
| 67.78 | 74505.24 | 148.09 | Anethole | 0.13 |
| 67.90 | 12,588.66 | 168.12 | trans-Piperitone Epoxide | 0.02 |
| 73.81 | 1,485,580.23 | 150.11 | Piperitenone | 2.58 |
| 76.35 | 16,187.02 | 148.09 | Shisofuran | 0.03 |
| 83.46 | 5906.44 | 150.11 | Thymol Isomer | 0.01 |
| 85.31 | 21,831.71 | 150.11 | Carvacrol | 0.04 |
| Total identified | 43 compounds | 99.17 | ||
* The m/z obtained were considered with a mass error of 1 ppm, corresponding to an uncertainty in m/z of 0.000136.