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Oil encapsulation techniques using alginate as encapsulating agent: applications and drawbacks.

Evandro Martins1, Denis Poncelet2, Ramila Cristiane Rodrigues1

  • 1a Department of Food Engineering , UFV , Viçosa , Brazil.

Journal of Microencapsulation
|November 23, 2017
PubMed
Summary
This summary is machine-generated.

Encapsulating oils in alginate hydrogel capsules protects them from degradation. This technique enhances the stability and usability of oils in various industries, including food and cosmetics.

Keywords:
Alginateencapsulationextrusionmicrocapsulesmicroencapsulationmixing

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Area of Science:

  • Food Science
  • Materials Science
  • Chemical Engineering

Background:

  • Oils are susceptible to oxidation and degradation, limiting their shelf-life and applications.
  • Encapsulation in inert structures (capsules) is a strategy to protect oils and mask undesirable properties.
  • Alginates are biocompatible, low-toxicity polymers with high gelling capacity, suitable for oil encapsulation.

Purpose of the Study:

  • To review oil encapsulation techniques using alginate hydrogels.
  • To discuss the mechanisms of alginate gelation for capsule formation.
  • To highlight the diverse applications of encapsulated oils.

Main Methods:

  • Capsule production techniques including jet-cutting, vibrating jet, spray-drying, dispersion, and milli-microfluidics.
  • Alginate crosslinking with calcium ions to form hydrogel networks.
  • Exploration of external, internal, and inverse gelation mechanisms for oil encapsulation.

Main Results:

  • Alginate hydrogels effectively encapsulate oils, preventing degradation.
  • Various methods allow for control over capsule morphology, core number, and size.
  • The choice of gelation mechanism influences the encapsulation process and final product.

Conclusions:

  • Alginate-based oil encapsulation is a versatile technology for improving oil stability.
  • The developed capsules have potential applications in cosmetics, textiles, food, and veterinary fields.
  • This method offers a promising approach to enhance the value and functionality of oils.