Abstract
Objective: Simple and effective high performance liquid chromatographic (HPLC) method was developed for estimation of ursolic acid in drug free human drug free blank plasma. Material and Methods: The current method was used protein precipitating extraction of ursolic acid from blank plasma. Separation was achieved on reversed-phase C18 column (250×4.6 mm, 5μ) and the detection was monitored by UV detector at 220 nm. The optimized mobile phase was used acetonitrile: 0.5% triethyl amine (pH 4.0), in the ratio of 70:30 % v/v at a flow rate of 1.0 mL/min. This linearity was achieved in this method range of 25.0–150.0 ng/ml with regression coefficient range is 0.99. Results: The present method is suitable in terms of precise, accurate and specific during the study. The simplicity of the method allows for application in laboratories that lack sophisticated analytical instruments such as GC–MS/MS or LC–MS/MS that are costly, time consuming and complicated rather than a simple HPLC–UV method. The present method was successfully applied for bioanalytical studies.
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