Ionic gelation

The reaction between ions of opposite charge begins the cross-linking process.

Ionotropic gelation occurs when an ionic polymer interacts with another of opposite charge. Here, cross-linking begins. This phenomenon involves the production of hydrogels characterized by a spherical shape in which hydrophilic and lipophilic components can be efficiently trapped inside the capsule.

In house: BUCHI Encapsulator B-390.

The advantages:

  • simplicity of the method
  • high payload capacity of the active ingredient
  • good organoleptic qualities and odor masking
  • method that does not require the use of temperature


  • pearls with dimensions between 20-1000 um, payload up to 70-80%

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