Table 2 Parameters of calibration graphs for the eleven phenolic standards used
From: Bioactivity studies on Zanthoxylum budrunga wall (Rutaceae) root bark
Peak no. | Polyphenolic compound | Linearity range (μg/mL) | Correlation coefficients (r2) | Detection limit (μg/mL)a | Quantitation limit (μg/mL)a | Recovery (%)b |
|---|---|---|---|---|---|---|
1 | GA | 1.00–5.00 | 0.9951 | 0.20 | 0.65 | 97.30 ± 1.99 |
2 | CT | 0.50–4.00 | 0.9972 | 0.10 | 0.38 | 97.50 ± 1.81 |
3 | VA | 1.00–5.00 | 0.9948 | 0.21 | 0.72 | 96.40 ± 1.04 |
4 | CA | 0.50–4.00 | 0.9950 | 0.14 | 0.47 | 97.90 ± 1.02 |
5 | EC | 1.00–5.00 | 0.9959 | 0.28 | 0.85 | 98.20 ± 2.84 |
6 | PCA | 1.00–5.00 | 0.9982 | 0.26 | 0.90 | 102.90 ± 2.65 |
7 | RU | 0.50–4.00 | 0.9976 | 0.13 | 0.45 | 101.30 ± 2.90 |
8 | EA | 1.00–5.00 | 0.9990 | 0.29 | 0.92 | 97.20 ± 2.08 |
9 | MC | 1.00–5.00 | 0.9981 | 0.29 | 0.92 | 98.20 ± 3.01 |
10 | QU | 0.25–3.00 | 0.9972 | 0.07 | 0.24 | 100.20 ± 3.13 |
11 | KF | 1.00–5.00 | 0.9991 | 0.27 | 0.86 | 101.50 ± 3.54 |