Susovita Khuntia, Priyangi Roy


The study was to design to formulate, evaluate and optimize the gefitinib-loaded poly-e-caprolactone microcapsules controlled release delivery system. It may be used as a potential alternate to conventional drug delivery system found to have serious limitations/drawbacks. The microcapsules were prepared by the solvent evaporation technique. Effects of different polymer: drug ratios and phase volume ratios (Independent variables) on the % drug entrapment efficiency, % Yield and mean particle sizes (Response variables) with the overall desirability characteristics were studied through 32 full Factorial design. The results showed the % drug entrapment efficiency: 46.58±0.085-84.39±0.500%, % Yield: 37.14±0.083-64.23±0.652%, and mean particle sizes: 47.42±1.241-115.37±0.44μ. Highest overall desirability was obtained from the optimized formulation comprising at 0.0 level of polymer: drug ratio and 1.0 level of phase volume ratio and it was selected for the further evaluation. Scanning electron microscopy image of microcapsules was discrete and spherical. Fourier transform Infrared Spectroscopy and Differential scanning electometry spectral analysis revealed the absence of drug-polymer interaction. The formulation showed burst release of 5.93% upto 1 h followed by sustained release of 23.89% upto 276 h. Drug release kinetics was fitted with Zero order, First order and Higuchi Model. Best fitted Higuchi’s model assured the potential controlled gefitinib release form the microcapsules. This preliminary study indicated the gefitinib loaded- poly-e-caprolactone microcapsules could be the potential drug delivery system for continuous controlled release for prolongs time. However, this study could be substantiated by the performance of in vivo.



gefitinib, poly-e-caprolactone, microcapsules, optimize, desirability, controlled release

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