Pectin nanoemulsions in multiple emulsions: stability and encapsulation efficiency

V. Massel, Y Fang, Milena Corredig*

*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Abstract

Pectin nanocapsules were obtained by gelling the inner droplets, in situ, in a multiple emulsion of the water in oil in water (W/O/W) type, using the enzyme Pectin methyl esterase. The inner phase was tested for its encapsulation efficiency by addition of brilliant blue or magnesium chloride. Rheological measurements and light scattering showed similarities for gelled and non gelled droplets containing high methoxy pectin. After one month of storage, the gelled nanocapsules showed a population of larger droplets, not appearing in the other W/O/W emulsions: the non gelled pectin droplets or control with no pectin. Confocal microscopy observations demonstrated the presence of the inner water droplets in all emulsions after one month of storage at 4 °C. Brilliant blue was retained in the inner droplets containing pectin, and the retention was not affected by the gelled inner phase. Magnesium ions were retained in all treatments, even in the case of control W/O/W emulsions, not containing pectin. With both systems studied, the presence of gelled nanocapsules did not cause significant differences in the encapsulation efficiency or stability of the W/O/W emulsions.
OriginalsprogEngelsk
Artikelnummer109950
TidsskriftFood Research International
Vol/bind139
Antal sider7
ISSN0963-9969
DOI
StatusUdgivet - jan. 2021

Emneord

  • Delivery systems
  • Pectin nanoemulsions
  • NanocapsulesqWater in oil in water emulsions

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