These are flashcards an notes made by students on topics like 'crystallisation', 'viscosity' and 'crystals', originating from:

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- Wageningen University
ISBN-13 9990002019708
665 Flashcards & Notes
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Study Cards on crystallisation, viscosity, crystals

Which 3 properties of crystals have to be controlled to obtain the right combination of strength and yield stress for a particular food?
  • Crystal volume fraction
  • Crystal size --> thin needles interact at much lower volume fraction than spherical or cubic crystals
  • Crystal shape --> more oblique (schuin), the faster the network
What is a supersaturated solution?
A solution that in principle can crystallize, but cannot due to the absence of nuclei.
Imagine having a sugar concentration of 60-90%. Cooling slowly gives more and more crystals. What happens to the viscosity of the solution?
More crystallisation means a lower viscosity, the solution becomes more fluid.
With which equation can the crystallisation line in state diagrams be predicted?
The Hildebrand equation
With which equation can the rate of freezing be approximated?
Plank's equation
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