Microencapsulation refers to a process by which minute
particles of liquid or solid material are coated with a
uniform and continuous film. A range of materials are
suited for use as the capsule material: lipids, wax,
crystal
starch, modified starch, cellulose, phospholipids
and other polymers.
Microencapsulation has a variety of purposes,
such as
the controlled release of active
ingredients, coating
liquid substances,
masking or protecting core material
as well as reducing volatility.
Unprotected
particle
liquid / solid
Encapsulation process
Protected particle
Range of applications :-
Stabilising of starter cultures and enzymes
Controlling/delaying release (pesticides and pharmaceuticals)
Masking taste, smell and colour (fish oil, plant extracts)
Protecting against UV, heat, oxidation, acids, bases (colorants and vitamins)
Stabilising of volatile constituents to improve shelf life (flavours and fragrances)
Reducing interactions between reactive ingredients in premixes or the final products