Research Article
Microwave-Assisted Extraction Studies of Target Analyte Artemisinin from Dried Leaves of Artemisia annua L.
Table 1
Solvent selection—effect of nature of solvent on the recovery of artemisinin from leaves of Artemisia annua L.
| Extraction method | Solvents | Dielectric constant | % Artemisinin recovered (% dry weight)b (±SD) |
| Soxhlet | n-hexane | 1.89 | 0.60 (±0.01) | Petroleum ether (60–80°C) | 2.00–2.20 | 0.62 (±0.02) |
| MAEa | Cyclohexane | 2.02 | 0.18 (±0.01) | n-hexane | 1.89 | 0.31 (±0.01) | Petroleum ether (60–80°C) | 2.00–2.20 | 0.30 (±0.01) | Ethyl acetate | 6.02 | 0.63 (±0.02) | Chloroform | 4.81 | 0.60 (±0.02) | Acetone | 20.7 | 0.63 (±0.01) | Methanol | 32.63 | 0.46 (±0.02) | Acetonitrile | 37.5 | 0.66 (±0.02) |
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MAE conditions (14 mesh, 100 mg, 5 mL, 160 W, and 60 s). Two cycles of extractions carried out in each case.
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