Chitosanealginate nanoparticles have the potential to be used for encapsulation of CDD using o/w emulsification and ionotropic gelation. The characteristics of nanoparticles containing CDD are strongly dependent on thepreparation parameters; i.e.type and concentration of surfactants, chitosan/alginate mass ratio, and concentration and rate of CDD addition. To get the highest encapsulation efficiency, loading capacity and yield of nanoparticles