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Novel route to stabilization of bioactive antioxidants by encapsulation in electrospun fibers of zein prolamine

Authors
Journal
Food Hydrocolloids
0268-005X
Publisher
Elsevier
Publication Date
Volume
23
Issue
5
Identifiers
DOI: 10.1016/j.foodhyd.2008.10.011
Keywords
  • Encapsulation
  • Electrospinning
  • Bioactive Foods
  • Agropolymers

Abstract

Abstract The encapsulation of the light sensitive model β-carotene, a colorant and antioxidant molecule widely used in the food industry, has been successfully achieved in ultrafine fibers of zein prolamine, a sustainable agropolymer, by means of electrospinning. Fiber capsules were in the micro- and nanorange in the cross-section and the encapsulation preserved the fluorescence of the polyene molecules. Observations with confocal Raman imaging spectroscopy showed that the antioxidant was stable and widely dispersed inside the zein fibers but agglomerated in some areas. Nevertheless, a significant increase in the light stability of the β-carotene when exposed to UV–vis irradiation was determined for the encapsulated compound. As a result, electrospinning of zein prolamine shows an excellent outlook for its application in the stabilization of light sensitive added-value food components.

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