Encapsulation
It is not easy to reach the coconut milk. A massive protective layer of wood and firm pulp shelter the interior.
Especially oils, flavours and odorous substances, which are sensitive to oxidation, require a good protection against oxygen or a barrier to hold back volatile substances. Microencapsulation makes it possible to include tiny droplets in the size of µm by sticking suitable capsule materials to the phase barrier of an emulsion. The smaller the diameter of the droplets in the emulsion, the more stable are the capsules so that oil and flavour will not escape during drying.
The emulsions can be dried to a pure, matrix or layering pellet.
Spraygranulation, a combination of drying and granulation in the fluid bed, is the process to be chosen for extremely sticky products. The compact, larger-sized granulates of the final product have excellent flowing properties. Due to the reduced surface the hygroscopicity is lowered and stickiness of the final product avoided. For sensitive materials the dense structure of the particles offers an additional protection against oxidation.
Advantages:
- Highly active pellet
- Dustfree
- Mechanically stable
- Compact
Embedded in a carrier, liquid and paste-like starting materials can be shaped to a compact pellet and dried gently. The specific properties of the matrix material provide additional functionality to the pellets like controlled release or a further protection of the ingredients.
Advantages:
- Processing of sticky and liquid substances
- Pelletizing of temperature sensitive materials
- Gentle drying
- Compact, mechanically stable
- Dustfree
- Controlled release
Pellets with multifunctional properties are created by applying different emulsions and actives on a carrier. The release of the particular layers can be triggered by time or by impulses like pH value, temperature etc.
Advantages:
- Great diversity
- Compact
- Mechanically stable