Kapseldamist

Kapseldamist is a process in which active substances are enclosed within a capsule or coating to form a discrete unit. The capsule can be a solid particle, a droplet, or a vesicle; the coating controls release, protects the core from environmental factors, masks taste, and enables targeted delivery.

There are two broad categories: microencapsulation and nanoencapsulation. Common techniques include coacervation, spray drying, extrusion, interfacial polymerization, liposome formation, and spray cooling. The choice depends on material properties, stability requirements, and the desired release profile.

Materials used range from natural polymers such as gelatin, alginate, and chitosan to cellulose derivatives and synthetic polymers like PLA/PLGA. Lipid-based systems and inorganic shells such as silica are also employed. The shell type dictates release mechanism and compatibility with the core.

Applications span pharmaceuticals for controlled release and enhanced stability; the food industry for protected flavors, nutrients, and probiotics; agriculture for controlled pesticide or fertilizer delivery; cosmetics for sustained release of actives; and materials science for functionalized particles.

Advantages include improved stability, controlled release, taste masking, and improved bioavailability, while limitations involve production cost, scalability, potential leakage or degradation before use, and regulatory and safety considerations. The field has evolved since the mid-20th century with advances in polymers and nanotechnology.