Table 2.
Precision and recovery of standard phytochemicals at 3 different concentrations.
| Phytochemical | Intraday n = 3 (Precision [% RSD]; Recovery [%]) | Interday n = 9 (Precision [% RSD]; Recovery [%]) | ||||
|---|---|---|---|---|---|---|
| 0.5 µg/mL | 2.5 µg/mL | 5.0 µg/mL | 0.5 µg/mL | 2.5 µg/mL | 5.0 µg/mL | |
| Catechin | 2.77 (88) | 1.95 (91) | 1.84 (98) | 4.65 (84) | 2.68 (88) | 1.67 (94) |
| 4-HBA | 3.74 (84) | 1.83 (89) | 1.57 (97) | 3.91 (86) | 2.32 (87) | 1.62 (95) |
| CA | 2.73 (83) | 2.54 (93) | 1.62 (93) | 2.43 (84) | 3.64 (89) | 1.54 (91) |
| VA | 2.96 (89) | 2.60 (95) | 1.87 (96) | 3.87 (83) | 2.45 (90) | 1.34 (97) |
| pCA | 4.59 (85) | 2.96 (95) | 1.74 (93) | 2.63 (89) | 3.69 (90) | 1.95 (93) |
| FA | 3.91 (89) | 1.64 (86) | 1.64 (92) | 2.86 (83) | 3.45 (87) | 1.63 (95) |
| Naringin | 4.86 (91) | 2.55 (86) | 1.96 (90) | 4.94 (82) | 2.86 (91) | 1.61 (97) |
| Hesperidin | 3.82 (90) | 1.54 (93) | 1.89 (98) | 3.32 (84) | 3.75 (92) | 1.39 (98) |
| Quercetin | 4.98 (88) | 1.74 (91) | 1.53 (91) | 3.43 (81) | 3.89 (88) | 1.54 (97) |
| Naringenin | 3.93 (86) | 1.57 (88) | 1.68 (94) | 3.35 (86) | 2.88 (92) | 1.58 (92) |
| Hesperetin | 4.77 (83) | 1.79 (92) | 1.55 (96) | 2.87 (89) | 3.80 (87) | 1.98 (95) |
| Kaempferol | 3.51 (90) | 1.92 (95) | 1.32 (97) | 4.43 (87) | 3.88 (92) | 1.49 (98) |