Viscosity, thickeners and gels - Gelatin gels

4 important questions on Viscosity, thickeners and gels - Gelatin gels

What does it mean that gelatin gels are thermoreversible?

High temperature (above melting temperature) --> gel melts

Low temperature --> gel formed

How is a gelatin gel formed?

Upon cooling, the collagen molecules associate into triple helices (by different peptide chains).

What is the gel strength of gelatin gels influenced by?

The concentration of triple helices. A higher concentration gives a higher gel strength.
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How are melting temperature and gelatin concentration related?

A higher gelatin concentration increases the melting temperature (and gives a higher gel strength.

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