microparticles to retain their shape when in contact with the coagulation solution due to the low viscosity of the 1% chitosan solution, and also due to the tendency of aggregation of the particles to occur after coagulation, which could be observed by SEM images. The Sauter mean diameter for the chitosan microparticles was calculated to be 121 μm. Before further processing, these microparticles were filtered through 53 μm sieves, obtaining the