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International Journal of Phytomedicine and Phytotherapy

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
  1. a Data were expressed as mean of triplicate measurements
  2. b Recovery are expressed as mean ± standard deviation carried out on ethanol extract of ZBRB