Low-field high-resolution PFG-NMR to predict the size distribution of inner droplets in double emulsions

Behnam Khadem, Andrew Parrott, Alison Nordon, Nida Sheibat-Othman

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
5 Downloads (Pure)


In double emulsions, the inner and outer droplet size distribution (DSD) determines the quality of the double emulsion and is therefore essential to be measured. Low-field high-resolution pulsed-field gradient nuclear magnetic resonance is used to measure the inner DSD in water-in-oil-in-water double emulsions. The Gaussian phase distribution approach is employed with a mixture of two normal distributions to predict bimodal inner droplets. This approach allows the prediction of the swelling of inner droplet during storage of double emulsions, and thus to validate a phenomenological population balance model estimating inner droplet swelling. Only a fraction of the inner droplets are found to swell during storage, due to differences in the Laplace pressure, thus leading to the formation of a bimodal size distribution of the inner droplets. Practical Applications: This methodology is useful to predict the evolution of double emulsions during storage, in a wide range of applications, such as food and pharmaceutical products.

Original languageEnglish
Article number2000193
JournalEuropean Journal of Lipid Science and Technology
Issue number1
Early online date21 Nov 2020
Publication statusPublished - 31 Dec 2021


  • emulsions
  • NMR spectroscopy
  • pulsed-field gradient
  • droplet size distribution
  • dynamic light scattering
  • double emulsions
  • gaussian phase distribution


Dive into the research topics of 'Low-field high-resolution PFG-NMR to predict the size distribution of inner droplets in double emulsions'. Together they form a unique fingerprint.

Cite this