FAQs

Can low-acyl gellan gum replace pectin in low-pH, thermo-reversible bakery jam fillings?

Yes, but with strict formulation adjustments regarding thermo-reversibility. Standard low-acyl gellan gum forms a crystalline network that does not melt under normal cooking temperatures once structured (thermo-irreversible under medium ionic concentrations). However, by reducing divalent ion concentration (Ca2+) and utilizing low levels of monovalent ions (Na+, K+) combined with precise dosing of sequestering agents (like sodium citrate), the gelation point can be manipulated to exhibit controlled thermo-reversibility. This allows the gellan gum matrix to achieve the uniform texture and excellent heat stability required for bakery bake-stable fruit fillings, requiring a fraction of the dosage used for high-methoxyl or low-methoxyl pectins.