Table 2.
Total phenolic and flavonoid contents, and antioxidant properties of the extracts
| Extract |
Total phenols
(µg GE/mg extract) |
Total flavonoids
(µg RE/mg extract) |
ABTS inhibition (%) | IC 50 (mg/ml) | ARP |
|---|---|---|---|---|---|
| PME | 445.3±3.2 | 287.8±19.0 | 64.4±3.9 | 10.4±0.6 | 0.10±0.01 |
| CWE | 140.9±5.0 | 21.6±1.4 | 52.8±3.2 | 24.8±1.5 | 0.04±0.00 |
| CME | 132.5±1.6 | 9.5±0.6 | 56.9±3.4 | 9.4±0.6 | 0.11±0.01 |
Data are presented as mean±SD. PME (Persicaria maculosa hydro-methanolic extract), CME (Citrus sinensis hydro-methanolic extract), CWE (Citrus sinensis aqueous extract), GE (Gallic acid equivalent), RE (Rutin equivalent), IC50 (extract concentrations that block 50% of radicals) and ARP (Antiradical power).