INCLUSION AND CHARACTERIZATION OF KETOPROFEN INTO DIFFERENT MESOPOROUS SILICA NANOPARTICLES USING THREE LOADING METHODS
Journal Title: International Journal of Pharmacy and Pharmaceutical Sciences - Year 2014, Vol 6, Issue 9
Abstract
Objective: The objective of the present study was to encapsulate ketoprofen into MCM-41, SBA-15 and uncalcined SBA-15 (unc SBA-15) using different loading methods. Investigate the effect of using different loading methods, and the effect of pore sizes on the loading capacity of mesoporous silica. Finally, determine if any changes in the mesoporous structure occurred after KP loading.Methods: Ketoprofen (KP) with about 1.5 nm molecular size was selected for encapsulation into three mesoporous silica nanoparticles (MSN). These MSN particles were selected to cover a wide range of pore diameters: MCM-41 (3.4 nm), SBA-15 (6.2 nm) and uncalcined SBA-15 (7.0 nm). Loading of KP was done by three loading methods namely rotavapor, soaking, and immersion method. The loading capacity was examined via solvent extraction. Characterization of the loaded mesoporous silica nanoparticles was done by high resolution transmission electron microscopy (HRTEM), small angle X-ray diffraction (SAXRD), nitrogen adsorption/desorption isotherms, differential scanning calorimetry (DSC), and Fourier transform infrared (FT-IR) spectroscopy.Results: KP was successfully encapsulated into MCM-41, SBA-15 and uncalcined SBA-15 without affecting the mesoporous structure. The loading process was done using three different loading methods. Rotavapor loading method yielded higher loading capacities compared to soaking and immersion method. Another important factor that affected the amount of loaded KP into MSN particles were the Pore sizes of the host particles. MCM-41, which had the smallest pore size, had the least amount of loaded drug. On the other hand, uncalcined SBA-15, which had the largest pore size, had the highest amount of loaded KP. Conclusion: This study is a promising issue for the incorporation of KP into different mesoporous silica nanoparticles.Â
Authors and Affiliations
A. Abd-elbary, M. A. El Nabarawi, D. H. Hassen, Amal Anwar Taha
Keywords
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