
Microencapsulation has been used across various industries since many years including agrochemical, pharmaceutical, food, paper industry and textiles. Microencapsulation is a process of coating small droplets or particles with a continuous film of polymeric material to produce small capsules known as microcapsules. There are many reasons behind encapsulation, some of them includes isolation from the surrounding, preventing evaporation of volatile substance, avoid unnecessary chemical attack on reactive materials and handling sticky material. In pharmaceutical industry, it has revolutionized the development of drug delivery by providing protection to encapsulated active ingredients against degradation and ensuring sustained release of drugs. Other advantages include masking the bitterness of certain drugs, targeted delivery to specific sites and ability to reduce adverse effects associated with some drugs. Most commonly used techniques for microencapsulation are chemical, physiochemical and electrostatic and mechanical processes. Chemical method involves in situ polymerization while physiochemical process includes separation based on coacervation phase, complex emulsion and dispersion. Pan coating, spray drying and bed granulator are the types of mechanical processes. Micro-K containing potassium chloride is encapsulated to enhance its release.