Development of UV Method for Simultaneous Estimation of Imipramine and Ferulic Acid in Bulk and Developed Freeze-Dried Mixed Micelles

Introduction:: A simple, precise, and sensitive UV spectrophotometric method was developed to estimate Imipramine and Ferulic acid in bulk and polymeric micelles formulation. Moreover, imipramine and ferulic acid showed maximum absorbance at 237 nm and 216 nm. Method:: The method was validated for linearity, accuracy, precision, robustness, and ruggedness. The detector response for the imipramine and ferulic acid was linear over the selected range of 2 to 12 μg/ml with a correlation coefficient of 0.996 and 0.997. The accuracy was 99.4 and 101.02%. The precision (RSD) among six sample preparations was 0.68% and 0.85%. The method was validated as per the ICH guidelines. A polymeric micelle formulation was developed containing Vitamin E TPGS and F-127 as a surfactant and block co-polymer using different solvents. The optimized formulation containing 40 mg of F-127 and 30 mg of TPGS yielded the desired attributes of the optimized formulation. Result:: The optimized formulation was subjected to freeze-drying and yielded nanoparticulate size and excellent flowability. In vitro, the release of both drugs from the polymeric micelles was evaluated using dissolution, and multi-fold enhancement in release behavior was demonstrated compared to pure drugs. Both drugs were simultaneously detected successfully with accuracy and precision in bulk form and during in vitro analysis Conclusion:: The developed method can be adopted in routine analysis of imipramine and ferulic acid in bulk, and it involves relatively low-cost solvents with no complex extraction techniques.