Mesoporous silica was developed to transport metoprolol tartrate (MPT). The data obtained from the kinetic experiments of adsorption of 15 ppm of MPT drug at 293 K was fitted in the pseudo-first-order, pseudo-second-order, and intraparticle diffusion models. The results show that the adsorption process obeys the pseudo-first-order equation and the rate-controlling step, not just the intraparticle diffusion step. The MPT drug load onto mesoporous silica was 15.13 mg/g. The release profile shows that the MPT drug was about 55% released after 40 min when released in water, while in phosphate-buffered saline (PBS) media, the release reached 90% after 60 min at body temperature (37°C). Three kinetic release versions, including first-order, Kopcha, and Korsmeyer-Peppas, were used to fit the in vitro drug release data. The results indicate that the Korsmeyer-Peppas model provided the best fit. The predicted n values show that the release process for water and PBS pH 7.4 media is not Fickian.
Metoprolol Tartrate Drug Loading and Release from Prepared Mesoporous Silica; Kinetic of Adsorption and Release
Metoprolol tartrate
Drug carrier
Mesoporous silica
Drug release
Adsorption kinetics