Abstract
The present study explored solvent impregnation drug loading process of the poorly soluble non-steroid anti-inflammatory drug indomethacin on MCM-41 type mesoporous silica carrier. Different technological factors that can influence drug-loading process as time of reaction, temperature, use of non-solvent as well as different ratios between drug and MCM-41 were studied. TEM and DLS were used to characterize physicochemical properties of obtained particles. The influence of drug-loading rate on dissolution process were studied using in-vitro release tests. Our results established that changes in explored technological factors could lead to different indomethacin loading. Moreover, the in-vitro release tests proved that drug loading rate had a direct influence on indomethacin release from MCM-41 particles. Our finding suggested that by tuning the main technological factors it would be possible different drug delivery systems with different drug loading rate to be obtained.
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