Organic Chemistry International / 2013 / Article / Tab 1

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 methodSolventsDielectric constant% Artemisinin recovered
(% dry weight)b (±SD)

Soxhletn-hexane1.890.60 (±0.01)
Petroleum ether (60–80°C)2.00–2.200.62 (±0.02)

MAEaCyclohexane2.020.18 (±0.01)
n-hexane1.890.31 (±0.01)
Petroleum ether (60–80°C)2.00–2.200.30 (±0.01)
Ethyl acetate6.020.63 (±0.02)
Chloroform4.810.60 (±0.02)
Acetone20.70.63 (±0.01)
Methanol32.630.46 (±0.02)
Acetonitrile37.50.66 (±0.02)

MAE conditions (14 mesh, 100 mg, 5 mL, 160 W, and 60 s).
Two cycles of extractions carried out in each case.