Abstract: A method includes separately conveying a first liquid solution (36) containing the first material and a second liquid solution (46) containing a liquid polyelectrolyte. The method includes forming of a series of drops (78) at the outlet (50), each drop (78) including a central core (80) formed from a first solution (36) and a peripheral film (82) formed from a second solution. The method includes immersing each drop (78) in a gelling solution (70) containing a reagent capable of reacting with the polyelectrolyte of the film (82) so as to form the gelled casing. The second solution (40) contains at least one surfactant before the former contacts the first solution (36).

Abstract: This invention concerns a nanoparticle comprising: a core consisting of a lipid phase (L1) or an aqueous phase (A1); at least one surfactant comprising a hydrophilic part and a lipophilic part; an internal membrane surrounding the core; an external membrane surrounding the internal membrane; and at least one targeting ligand comprising a lipophilic part and a hydrophilic part.

Abstract: A method includes separately conveying a first liquid solution (36) containing the first material and a second liquid solution (46) containing a liquid polyelectrolyte. The method includes forming of a series of drops (78) at the outlet (50), each drop (78) including a central core (80) formed from a first solution (36) and a peripheral film (82) formed from a second solution. The method includes immersing each drop (78) in a gelling solution (70) containing a reagent capable of reacting with the polyelectrolyte of the film (82) so as to form the gelled casing. The second solution (40) contains at least one surfactant before the former contacts the first solution (36).

Abstract: The invention relates to a method for preparing monodispersed biodegradable microspheres consisting in a) preparing an emulsion containing at least one polymeric phase and at least one aqueous phase at a viscosity ratio between the dispersed polymeric phase and the aqueous phase ranging from 0.12 to 10, b) exposing the thus obtained emulsion to a controlled laminar shear strength, c) removing a solvent from the polymeric phase and in d) isolating the thus obtained microspheres. The use of the prepared microspheres is also disclosed.

Abstract: A composition includes a monodispersed lipid phase which is dispersed in a continuous aqueous phase, wherein the lipid phase includes at least one crystallizable lipid, at least one active ingredient and at least one compound including two chains of fatty acids and one glycol polyethylene chain. A method for the preparation of the compositions via a simple monodispersed O/W or O/W/O double emulsion is also disclosed.