Research Article
Micellar LC Separation of Sesquiterpenic Acids and Their Determination in Valeriana officinalis L. Root and Extracts
Table 1
Characteristic parameters of the calibration equations for the proposed MLC method for sesquiterpenic acids determination.
| | Parameters | Hydroxyvalerenic acid | Acetoxyvalerenic acid | Valerenic acid |
| | Calibration range (μg·mL−1) | 1.9–27.9 | 4.2–63.0 | 6.1–91.2 | | Detection limit (μg·mL−1) | 0.037 | 0.09 | 0.14 | | Quantitation limit (μg·mL−1) | 0.11 | 0.27 | 0.42 |
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Parameters of regression equation , where C is the concentration of compound in μg·mL−1, Y is the peak area |
| | Intercept (a) | −5.5·103 | −7.8·104 | −1.6·104 | | SD of the intercept (Sa) | 0.3·103 | 0.6·104 | 0.1·104 | | Slope (b) | 27.1·103 | 21.3·104 | 23.8·104 | | SD of the slope (Sb) | 0.2·103 | 0.2·104 | 0.2·104 | | RSD of the slope, % | 0.74 | 0.94 | 0.84 | | Correlation coefficient (r) | 0.9995 | 0.9994 | 0.9995 |
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