The essential oil was extracted through hydro-distillation, and its chemical composition was determined using gas chromatography-mass spectrometry (GC-MS). Its antimicrobial properties were evaluated by measuring the minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC), and minimum fungicidal concentration (MFC) against eight bacterial and eight fungal strains using 96-well microtiter plates. The oil yield was 1.8 ± 0.07%, with spathulenol (27%) and trans-nerolidol (23%), both oxygenated sesquiterpenes, identified as the predominant compounds among the 30 detected constituents.
Cazella, L. N., Glamoclija, J., Sokovi?, M., Gonçalves, J. E., Linde, G. A., Colauto, N. B., & Gazim, Z. C. (2019). Antimicrobial activity of essential oil of Baccharis dracunculifolia DC (Asteraceae) aerial parts at flowering period. Frontiers in plant science, 10, 27.
| Serial No. | Compound Name | Compound Percentage(%) |
|---|---|---|
| 1 | Spathulenol | 27.43 |
| 2 | Nerolidol | 23.06 |
| Serial No. | Compound Name | Compound Percentage(%) |
|---|---|---|
| 1 | Heptacosane | 6.02 |
| 2 | Beta-Pinene | 5.41 |
| 3 | Germacrene D | 4.49 |
| 4 | (E)-Caryophyllene | 4.6 |
| 5 | Epi-Alpha-Muurolol | 4.08 |
| 6 | Bicyclogermacrene | 4.7 |
| 7 | D-Cadinene | 3.31 |
| 8 | Viridiflorol | 2.01 |
| 9 | Limonene | 2.87 |
| 10 | Alpha-Cadinol | 1.46 |
| 11 | Alpha- Pinene | 1.3 |
| 12 | Allo-Aromadendrene | 1.28 |
| 13 | Murolan-3,9(11)-diene-10-peroxy | 1.93 |
| 14 | Alpha-Gurjunene | 0.15 |
| 15 | Alpha-Copaene | 0.29 |
| 16 | Phytol | 0.11 |
| 17 | Myrtenol | 0.15 |
| 18 | A-Humulene | 0.84 |
| 19 | Gamma-Muurolene | 0.31 |
| 20 | Cedren-13-ol, 8- | 0.83 |
| 21 | Gamma-Cadinene | 0.49 |
| 22 | gamma-elemene | 0.33 |
| 23 | Beta-Ylangene | 0.42 |
| 24 | Beta-Elemene | 0.57 |
| 25 | Beta-Bourbonene | 0.7 |
| 26 | Alpha-Terpineol | 0.16 |