Table 1.
The extraction yields and the calculated values of the half maximal inhibitory concentrations (IC50) of antioxidant activity (GraphPad Prism 7 [60]) of extracts prepared with different solvents or solvent mixtures tested in the concentration range of 0.195–400 µg mL−1.
| Extraction Solvents | ||||||||
|---|---|---|---|---|---|---|---|---|
| Water | Methanol | Acetone | Ethanol | Ethyl Acetate | ||||
| 100% | 80% (aq) | 100% | 70% (aq) | 100% | 70% (aq) | 90% (aq) | ||
| Extraction yield (w/w %) | 25.8 | 38.1 | 37.2 | 21.1 | 42.6 | 29.3 | 44.3 | 14.9 |
| IC50 (µg mL−1) | 3.561 | 3.715 | 3.469 | 2.632 | 3.350 | 2.893 | 3.503 | 2.786 |
| LogIC50 | 0.552 | 0.570 | 0.540 | 0.420 | 0.525 | 0.461 | 0.544 | 0.445 |
| LogIC50 std. error | 0.016 | 0.014 | 0.022 | 0.018 | 0.017 | 0.016 | 0.014 | 0.020 |
| Hillslope | 1.607 | 1.884 | 1.669 | 1.911 | 1.665 | 1.924 | 1.789 | 1.756 |
| Hillslope std. error | 0.083 | 0.105 | 0.125 | 0.136 | 0.097 | 0.123 | 0.093 | 0.124 |