Table 1.
Extraction yields, total phenolic, and total flavonoid contents, and antioxidant activities (IC50 values) of Paeonia suffruticosa flowers.
| Items | VC | BHT | Samples | |||
|---|---|---|---|---|---|---|
| BEE | FEE | PEE | SEE | |||
| Extraction yields (%) | -- | -- | 35.46 ± 3.12 | 50.76 ± 1.95 | 42.72 ± 2.48 | 25.77 ± 4.54 |
| Total phenolic content (mg GAE/g ext.) | -- | -- | 191.80 ± 3.44 | 113.84 ± 0.84 | 51.66 ± 0.34 | 77.25 ± 0.58 |
| Total flavonoid content (mg RE/g ext.) | -- | -- | 30.60 ± 0.94 | 49.87 ± 0.82 | 12.98 ± 0.78 | 8.86 ± 0.98 |
| DPPH radical scavenging activity (μg/mL) | 6.16 ± 0.46 | 64.49 ± 4.68 | 34.44 ± 1.35 | 14.83 ± 2.03 | 64.00 ± 5.60 | 42.70 ± 0.79 |
| Hydroxyl radical scavenging activity (mg/mL) | 0.61 ± 0.02 | -- | 1.57 ± 0.04 | 1.79 ± 0.02 | 2.57 ± 0.06 | 2.10 ± 0.004 |
VC: vitamin C; BHT: butylated hydroxytoluene; BEE: bud ethanolic extract; FEE: flower ethanolic extract; PEE: petal ethanolic extract; SEE: stamen ethanolic extract. Data were expressed as mean ± SD (n = 3).