These are flashcards an notes made by students on topics like 'crystallisation', 'first-order' and 'second-order', originating from:

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- Wageningen University
ISBN-13 9990002019708
665 Flashcards & Notes
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Study Cards on crystallisation, first-order, second-order

What are the 2 major ways to solidify foods?
  • Vitrification (glassy transition)
  • Crystallization
What is the difference between glassy and crystallisation?
Glassy --> a matrix becomes glassy as a whole. Rubber that crosses the glass transition will not change structurally, it will only change its dynamic behaviour, but the molecules stay exactly where they were before.

Crystallisation --> partly crystalline. Molecules have to rearrange into an ordered structure, and generally can only form crystals with their own kind.
What is the difference between a first-order and second-order transition?
First-order --> needs re-ordering, creates a new phase
Second-order --> only changes the rate at which changes of properties take place, no re-ordering
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