Table 3.
Lag time and percentage of inhibition of conjugated dienes formation in Cu++—triggered LDL oxidation in the absence or in the presence of increasing concentrations of Carthamus Tinctorius (CT) extracts, hydroxy safflor yellow A (HSYA) and safflor yellow A (SYA). Phenolic concentrations of CT extract are expressed as µg gallic acid equivalent (GAE)/mL. * p < 0.05 vs. LDL oxidized in the absence of polyphenols (control).
| Sample | Concentration | Lag Time (Minutes) | Inhibition (%) |
|---|---|---|---|
| Ctrl | 0 | 30 ± 2 | - |
| CT extract (µg GAE/mL) | 0.34 | 44 ± 3 * | 46 ± 2 |
| 1.70 | 59 ± 2 * | 96 ± 1 | |
| 17.0 | 90 ± 4 * | 200 ± 4 | |
| HYSA (µg/mL) | 1.2 | 56 ± 6 * | 86 ± 4 |
| 6.0 | 65 ± 2 * | 116 ± 1 | |
| 60.0 | >200 * | - | |
| SYA (µg/mL) | 1.2 | 29 ± 5 | 0 |
| 6.0 | 35 ± 6 | 16 ± 4 | |
| 60.0 | 49 ± 4 * | 63 ± 2 |