Preparation procedures - Ingredients - Lipids

3 important questions on Preparation procedures - Ingredients - Lipids

Are the mechanical properties of lipids good or bad?

Bad
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Why are lipids suitable as barrier against moisture?

Water is poorly soluble in lipids.
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Many lipids are crystalline. What does that have an effect on?


  • The extremely low solubility and diffusivity in crystals lead to a low overall permeability.
  • The form and orientation of crystals can be important to the permeability behaviour: planar crystals oriented parallel to the surface act as individual layers in series. This leads to a much lower overall permeability.
  • However, the higher the crystalline fraction, the poorer the mechanical properties are.
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