Table 2 Antioxidant potential and the TPC of the EA extract of the Sri Lankan TBQ
Extract/Positive control | DPPH radical scavenging activity (IC50: μg/ml) | ABTS radical scavenging activity (mg of trolox equivalents /g of DW) | Ferric reducing antioxidant power (mmol of ferrous equivalents /g of DW) | Phenolic content (mg of gallic acid equivalents /g of DW) |
|---|---|---|---|---|
TBQ extract | 20.6 ± 1.8 | 624.8 ± 8.5 | 3688.9 ± 223.8 | 114.0 ± 1.3 |
Ascorbic acid* | 4.2 ± 0.1 | 1263.8 ± 39.0 | 8068.4 ± 62.3 | – |
Trolox* | 6.3 ± 0.1 | – | 5176.8 ± 33.0 | – |