Gellan gum - Viscosity and gelation

4 important questions on Gellan gum - Viscosity and gelation

How does gellan gum for a gel?

After being hydrated at high temperatures and cooled down to 30-45 C, gellan gum forms a gel.

What is the concentration of gellan gum needed to be functional?

A much lower concentration than other hydrocolloids (0.05-0.3%)

What kind of gels can be made with gellan gum?

  • Soft and elastic gels --> native gellan gum
  • Hard, brittle gels --> de-acylated gellan gum
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How do pH and calcium influence the gel strength of gellan gum?

Addition of calcium and lowering the pH can give stronger gels.

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