Gelatin replacement strategy: Low-acyl gellan gum (0.15–0.25%) provides the firm, brittle base gel, while konjac glucomannan (0.3–0.5%) contributes elasticity and water-holding capacity. The synergy arises because konjac's glucomannan chains interrupt gellan's double-helix network, creating a more cohesive, less brittle matrix.
✦ Typical formula: Low-acyl gellan 0.20% + Konjac 0.40% + Potassium chloride 0.05% (cation activator) + Sucrose 18–22%, pH 3.8–4.2
Syneresis control: Cation concentration is critical — excess K⁺ or Ca²⁺ causes over-crosslinking and water expulsion. Maintain ionic strength below 20 mEq/L. Adding 0.3% carboxymethylcellulose (CMC) further retains free water. Avoid freeze–thaw cycles; this blend tolerates refrigeration (4°C) well. Key process tip: dissolve gellan above 85°C, cool to 60°C before adding potassium salts to prevent premature gelling.
