Encapsulation and release characteristics of glibenclamide loaded calcium-alginate beads

Abstract

The aims of this study were to formulate calcium-alginate beads containing glibenclamide, characterize the resulting microparticles, evaluate the release characteristics of this type of delivery system in an in vitro dissolution test, and compare it with two commercially available trademarks (Daonil ® and Glibetab®). We obtained glibenclamide loaded calcium-alginate beads with a rough surface and a particle size between 150-200 μm. For the in vitro dissolution test Daonil® at 45 min showed a Q > 70%, whereas Glibetab® and glibenclamide calciumalginate beads a Q < 70%; in spite of that glibenclamide calcium-alginate beads showed significant release properties. Keywords: glibenclamide; calcium-alginate beads; dissolution.