Encapsulation of Flavor Molecules, 4-Hydroxy-3-Methoxy Benzoic Acid, into Layered Inorganic Nanoparticles for Controlled Release of Flavor

4-hydroxy-3-methoxybenzoic acid (vanillic acid: VA), which is a widely used flavoring agent in foods, was successfully intercalated into layered double hydroxide (LDH) to produce VA-LDH nanohybrids. The structure and VA release kinetics of the nanohybrids were systematically investigated with respect to charge density of host LDHs.