These are flashcards an notes made by students on topics like 'emulsifier', 'zeta-potential' and 'droplets', originating from:

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- Wageningen University
ISBN-13 9990002019708
665 Flashcards & Notes
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Study Cards on emulsifier, zeta-potential, droplets

How is the amount of emulsifier needed related to the droplet size?
Smaller droplets have a larger specific surface area, so more emulsifier is needed (a higher surface load needed)
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Is the amount of emulsifier needed easily predicted?
No, not at all. In practice, most food emulsions are formulated with large excess of emulsifiers, meaning that a substantial fraction of the emulsifier used remains non-absorbed in the continuous phase of the emulsion.
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For what is the zeta-potential very sensitive?
  • pH --> pH close to pI --> charge lower --> zeta-potential lower
  • ionic strength --> high --> charge lower --> zeta-potential lower
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