These are flashcards an notes made by students on topics like 'biopolymers', 'concentration' and 'glycerol', originating from:

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- Wageningen University
ISBN-13 9990002019708
665 Flashcards & Notes
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Study Cards on biopolymers, concentration, glycerol

How does the ratio of water/biopolymers decide the state of the product?
Low concentration of water --> solid
Low concentration of biopolymer --> liquid
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Which 2 factors determine the state of a product?
  • Temperature
  • Presence of plasticiser (often water, but can also be glucose and glycerol)
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What happens at a high concentration of the dispersed phase?
The particles become jammed, this results in a strong increase in viscosity.
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What are 2 ways to stabilise food?
  1. Emulsifiers for emulsion-based foods, using proteins or surfactants
  2. To structure the continuous phase with biopolymers --> proteins, carbohydrate gums or starch can form a network or gel in which oil droplets are immobilized
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Which 3 different types of water are there?
  • Free water as in a solution
  • Capillary water as absorbed in porous media
  • 'Bound water' as being absorbed by biopolymers
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