Table 1.
Chemical composition of essential oils extracted from Ocimum sanctum L. leaves by hydrodistillation method
| Number of peak | Chemical compounds and structures | Retention time (min) | % Area | Molecular formula | Molar mass (g/mol) |
|---|---|---|---|---|---|
| mm | Monoterpene | ||||
| 1 | α-thujene | 5.48 | 0.19 | C10 H16 | 136.23 |
| 2 | camphene | 5.62 | 0.21 | C10 H16 | 136.24 |
| 3 | sabinene | 6.33 | t | C10 H16 | 136.23 |
| 4 | β-pinene | 6.39 | 0.13 | C10 H16 | 136.24 |
| 5 | limonene | 7.96 | 0.08 | C10 H16 | 136.24 |
| Oxygenated monoterpene | |||||
| 6 | 1,8-cineole | 8.11 | 0.06 | C10 H18 O | 154.249 |
| 7 | linalool | 10.59 | 0.3 | C10 H18 O | 154.25 |
| 8 | borneol | 13.59 | 0.54 | C10 H18 O | 154.249 |
| Sesquiterpene | |||||
| 10 | β-elemene | 23.07 | 2.64 | C15 H24 | 204.35 |
| 12 | 9-epi (E)-caryophyllene | 25.41 | 23.68 | C15 H24 | 204.36 |
| 13 | α-humulene | 25.8 | 1.5 | C15 H24 | 204.36 |
| 14 | γ-muurolene | 26.39 | 0.4 | C15 H24 | 204.35 |
| 15 | β-selinene | 26.78 | 0.11 | C15 H24 | 204.35 |
| 16 | α-selinene | 27.16 | 0.11 | C15 H24 | 204.35 |
| 17 | α-bulnesene | 27.48 | 4.6 | C15 H24 | 204.35 |
| 18 | δ-cadinene | 29.01 | 0.1 | C15 H24 | 204.35 |
| Phenyl propanoid | |||||
| 9 | eugenol | 21.26 | 18.25 | C10 H12 O2 | 164.2 |
| 11 | methyl eugenol | 23.61 | 47.06 | C11 H14 O2 | 178.23 |
t = trace