Description
Low-acyl gellan forms heat-stable, optically clear gels through calcium-mediated helix aggregation.
Technical
Deacetylated gellan gum (low-acyl form) undergoes coil-to-helix transition upon cooling in the presence of divalent cations, forming rigid, brittle gels through double-helix aggregation. The transparency results from minimal light scattering due to uniform polymer network spacing (≈100-200nm) smaller than visible light wavelengths.
Culinary Significance
Creates structural elements without visual obstruction, ideal for suspended ingredients, edible lenses, or flavor encapsulation in transparent mediums.
Science
Primary Reaction
Ionic crosslinking of gellan helices via Ca²⁺ bridges
Parameters
Temperature
85°C optimal
40°C to 120°C range
Time
1 hour
10 minutes – 4 hours
Equipment