Research Article
Quantification of Barbatusin and 3β-Hydroxy-3-deoxybarbatusin in Plectranthus Species by HPLC-DAD
Table 2
Precision and accuracy for 1 and 2 in Plectranthus samples.
| Precision | Accuracy | Analyte | Amount µg/mL | Intraday RSD (%) | Interday RSD (%) | Amount added (µg/mL) | Amount found (µg/mL) | Recovery (mean ± RSD, %, ) |
| 1 | 85.0 | 3.42 | 5.70 | 186.5 | 152.3 | 81.7 ± 1.74 | 170.0 | 2.10 | 3.31 | 249.0 | 259.1 | 104.0 ± 2.10 | 680.0 | 1.92 | 6.01 | 374.0 | 384.0 | 102.7 ± 3.39 |
| 2 | 65.0 | 3.44 | 2.68 | 37.8 | 40.3 | 107.6 ± 3.60 | 130.0 | 3.34 | 6.21 | 47.8 | 50.4 | 105.4 ± 2.94 | 325.0 | 1.36 | 10.95 | 62.8 | 64.1 | 102.1 ± 2.73 |
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