Abstract: A synthetic particulate vector comprising a non-liquid hydrophilic nucleus and an outer layer at least partially consisting of amphiphilic compounds, which is combined with the nucleus by hydrophobic interactions and/or ionic bonds. A process for preparing a particulate vector by encapsulating an ionizable active principle, vectors obtained according to such a process, and pharmaceutical, cosmeticological and food compositions comprising such vectors are also disclosed.

Abstract: The invention relates to a process for the preparation of a particulate antimicrobial product from the LP system of the lactoperoxidase enzyme/oxygen donor/oxidizable substrate (if needed). The process comprises bonding the lactoperoxidase enzyme to a particulate carrier comprising a polysaccharide nucleus, a first lipidic layer and a second phospholipidic layer in such a manner that the enzyme molecules are inserted into this second layer and/or into the first layer. The product according to the invention is obtained by then conditioning in a non-aqueous medium the aforesaid particulate vector and the molecules of the LP system not integrated into said vector. The process of the invention permits adjusting the diffusability of the product and its mobility as a function of the intended applications, without destruction of the LP system.

Abstract: A particulate carrier, including a hydrophilic, non-liquid core, a first layer or ring of lipid nature bonded to the core by covalent bonds and a second layer or outer shell of amphiphilic compounds bonded to the first lipid by hydrophobic interactions.