Table 2.
In vitro antioxidant activity of extracts obtained at different times and sample–solvent ratios determined by DPPH, FRAP, and TEAC, expressed as µmol of Trolox Equivalent (TE) per g of dried olive leaf.
| S1 | S2 | S3 | S4 | S5 | S6 | S7 | S8 | S9 | |
|---|---|---|---|---|---|---|---|---|---|
| DPPH | 632 ± 54 a | 608 ± 12 a | 474 ± 6 bc | 554 ± 26 ad | 451 ± 15 bc | 405 ± 32 b | 557 ± 14 ad | 505 ± 41 cd | 432 ± 7 bc |
| FRAP | 858 ± 19 a | 834 ± 5 ab | 822 ± 56 ab | 623 ± 7 c | 628 ± 1 c | 836 ± 92 ab | 776 ± 46 b | 723 ± 6 b | 1040 ± 4 d |
| TEAC | 448 ± 4 a | 401 ± 7 b | 407 ± 1 b | 414 ± 7 b | 382 ± 5 c | 486 ± 17 d | 408 ± 22 b | 369 ± 2 c | 395 ± 6 bc |
S1: 2 g/100 mL, no storage time; S2: 5 g/100 mL, no storage time; S3: 12.5 g/100 mL, no storage time; S4: 2 g/100 mL, 1 month storage; S5: 5 g/100 mL, 1 month storage; S6: 12.5 g/100 mL, 1 month storage; S7: 2 g/100 mL, 2 months storage; S8: 5 g/100 mL, 2 months storage; S9: 12.5 g/100 mL, 2 months storage. Different letters among the same row indicate the presence of statistically significant differences.