Description
Low-acyl gellan forms heat-stable, optically clear gels through ionic crosslinking.
Technical
Low-acyl gellan gum undergoes cation-mediated helix aggregation (primarily Ca²⁺ or Mg²⁺) forming brittle, thermoreversible gels via double-helix junction zones. Unlike high-acyl gellan, it produces transparent structures due to reduced polymer entanglement.
Culinary Significance
Enables creation of delicate edible glass panels, jewel-like garnishes, and stable fluid gels for modernist plating.
Science
Primary Reaction
Ionic gelation (divalent cation crosslinking)
Parameters
Temperature
90°C optimal
40°C to 120°C range
Time
5 minutes
2 minutes – 15 minutes
Equipment
Precision scaleImmersion circulatorSilicon molds