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
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What is a supersaturated solution?
A solution that in principle can crystallize, but cannot due to the absence of nuclei.
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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.
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With which equation can the crystallisation line in state diagrams be predicted?
The Hildebrand equation
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With which equation can the rate of freezing be approximated?
Plank's equation
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