Research Article
Optimization of Vacuum Microwave-Mediated Extraction of Syringoside and Oleuropein from Twigs of Syringa oblata
Table 3
Comparison of extraction by different methods.
| | Method | Solvent | Soaking time (h) | Heating time consumption (min) | Yield (mean ± SD) (mg/g) | | Syringoside | Oleuropein |
| | VMME | 40% volume fraction ethanol | 1 | 6 | 5.92 ± 0.24 | 4.02 ± 0.18 | | MAE | 40% volume fraction ethanol | 1 | 6 | 3.95 ± 0.14 | 3.02 ± 0.09 | | HRE | 40% volume fraction ethanol | 1 | 60 | 2.52 ± 0.08 | 2.31 ± 0.08 |
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VMME, vacuum microwave-mediated extraction; MAE, microwave-assisted extraction; HRE, hot reflux extraction.
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