Table 5.
Precision and accuracy data for the proposed HPLC-PDA method.
| Analyte | Precision (RSD, %) | Accuracy | |||
|---|---|---|---|---|---|
| Intra-Day Variability | Inter-Day Variability | Mean Recovery ± SD (%) | |||
| tR (Retention Time) | Peak Area | tR (Retention Time) | Peak Area | ||
| NCHA | 0.41 | 0.39 | 1.72 | 3.47 | 99.45 ± 2.16 |
| CHA | 0.30 | 0.84 | 1.65 | 3.65 | 100.00 ± 3.25 |
| CCHA | 0.27 | 0.85 | 1.48 | 3.53 | 99.23 ± 3.33 |
| PB2 | 0.28 | 1.58 | 1.78 | 3.88 | 99.15 ± 2.97 |
| ECA | 0.27 | 1.27 | 1.55 | 3.73 | 98.92 ± 2.55 |
| GT | 0.21 | 0.34 | 1.33 | 2.74 | 101.16 ± 3.46 |
| CB1 | 0.32 | 1.93 | 1.47 | 3.76 | 98.78 ± 3.77 |
| DGQ | 0.24 | 1.32 | 1.35 | 3.85 | 99.86 ± 2.32 |
| HY | 0.26 | 1.53 | 1.54 | 3.77 | 99.91 ± 2.15 |
| MQ | 0.28 | 1.46 | 1.62 | 3.54 | 99.33 ± 2.73 |
| QU | 0.09 | 1.32 | 1.73 | 4.12 | 99.65 ± 2.49 |
Analytes: QU, quercetin; MQ, miquelianin; HY, hyperoside; DGQ, wintergreenoside A; ECA, (−)-epicatechin; PB2, procyanidin B2; CB1, cinnamtannin B-1; NCHA, neochlorogenic acid; CHA, chlorogenic acid; CCHA, cryptochlorogenic acid; GT, gaultherin.