Introduction: Rosmarinic acid has been utilized in traditional medicine as antioxidant, antiinflammation, anticancer and antibacterial. In order to control the herbal quality, validation of rosmarinic acid determination using high-performance liquid chromatography was developed. The objective of this report was to validate an HPLC technique for assessing rosmarinic acid levels. and application that method to determine rosmarinic acid in Rosmarinus officinalis, Symphytum officinale, Mentha piperita, Orthosiphon stamineus and Salvia officinale. Methods: The chromatographic separation was carried out on a reversed-phase C18 column with a mobile phase of 0,1% formic acid and acetonitrile and an isocratic elution at a flow rate of 0,5 mL/min. The wavelength for detection was set to 330 nm. The method has been validated for precision, accuracy, linearity, limit of detection, and limit of quantitation. Result: The concentration response of the detector was linear, with a coefficient of determination of 0.9933. The HPLC technique had an accuracy of 101,00 ± 6,43%. The precision was 6,36% when expressed as a coefficient of variation (CV). The highest level of rosmarinic acid was 214,86 ± 0,60 µg/mL in Rosmarinus officinalis extract. Conclusion: The HPLC method was valid to analyse rosmarinic acid level. The method can be applied in routine determination of rosmarinic acid of phytopharmaceutical products.
- Laminaceae Borraginaceae
- Rosmarinic acid