Iron-entrapped niosomes and their potential application for yogurt fortification
2016
Abstract Several formulations were tested for iron-entrapped niosomes with high stability and encapsulation efficiency. A modified ethanol injection method was selected for niosomes preparation. Niosomes formulated with Glycerol monooleate, Polyglyceryl-3 dioleate or Sorbitan monooleate as food-grade surfactants and dodecanol as membrane stabilizer showed iron encapsulation efficiencies in the 72–84% range. Niosomes stability against simulated gastric fluid and simulated intestinal fluid was evaluated by measuring the entrapment efficiency and oxidation of iron. The best formulations were selected for preparation of iron-fortified yogurts. Sensory, rheological and stability properties of the control yogurt were only slightly affected by iron-entrapped niosomes. These results demonstrated that yogurt could be a suitable vehicle for the iron-entrapped niosomes formulated in this work.
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