Barrier layer capsules

Abstract

An active-containing microparticle adapted to release the active in a desired end-use, comprising (a) an active-containing core active-containing core, optionally formed on an inner core, comprising a continuous hydrophilic medium in which at least one active is dissolved or is present as? dispersed particles; (b) an active-free barrier layer, surrounding completely the core; and (c) surrounding the barrier layer, a layer of polymeric material having a solubility in water at 25° C. of 0.1% by weight maximum; the barrier layer comprising a material selected from waxes, fats and materials suitable for use as the continuous hydrophilic medium of the core, and which is solid in the conditions of the desired end-use. The particles are useful, for example, for the delayed release of flavors in foods and beverages.

Dependencies are inferred from the claim text.