Gellan Gum · E418
The practical knowledge base for gellan gum.
Properties, types, applications and technical information — written for formulators, QA teams and anyone working with E418.
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Gellan Gum in Tube Feeding and Clinical Nutrition
An enteral formula is one of the hardest systems in food manufacturing: it must be sterile, stable for 12 to 24 months, pumpable through a 3 mm tube, and it must hold insoluble minerals such as calcium phosphate in suspension at a pH near neutral. Gellan gum is used at 0.02% to 0.05% in these products because it is one of the few stabilisers that survives the retort cycle and still delivers suspension at a viscosity the pump can handle.
Gellan Gum VS Sodium Alginate
Gellan gum and sodium alginate are the two hydrocolloids that set by reacting with calcium, and that similarity leads formulators to treat them as interchangeable. They are not. Alginate gels on contact with calcium, immediately, at room temperature, which is why it is the material behind every spherification sphere on a restaurant menu. Gellan gels on cooling after the calcium is already in the mix, which is why it is the material behind the suspension in a bottle of oat milk. The setting behaviour, not the chemistry, decides which one a product needs.
Gellan Gum VS Locust Bean Gum
These two are not alternatives in the usual sense, because they do different jobs. Locust bean gum is a galactomannan thickener that builds viscosity and, on its own, does not gel. Gellan gum is an ion-set gelling agent that builds structure at a tenth of the dose. Formulators compare them because both appear in dairy desserts, both hold particles in suspension, and both are sold as "the stabiliser" on a specification sheet, but choosing between them is a decision about texture and process rather than about performance level.
Gellan Gum in Acidified Milk Systems
Acidified milk is unstable by design. Casein sits at its isoelectric point around pH 4.6, and any acidified milk drink at pH 3.8 to 4.2 lives just below that, where the protein is held in suspension only by whatever the formulator puts around it. Gellan gum is used at 0.02% to 0.05%, alone or blended with high methoxyl pectin, to build the network that keeps the casein aggregates from settling into a hard layer at the bottom of the bottle.
Microwave and oven Stability
Whether a gellan gel survives a microwave or an oven depends entirely on which grade it is. A low acyl gel that has set in the presence of calcium does not melt again below roughly 120 °C, so it passes through a microwave, a retort and a bake intact. A high acyl gel sets around 70 to 80 °C and softens again on reheating, so it behaves like gelatine in the same cycle. Choosing the grade for the process, rather than for the texture alone, is what decides whether a product survives the consumer's kitchen.
Gellan Gum in Sports and Electrolyte Drinks
Electrolyte drinks are the one beverage category where the formulation actively works against the stabiliser. Sodium at 500 to 1200 mg/L, potassium, magnesium and calcium are the product; the same ions crosslink gellan gum. The result is that sports drinks use lower doses than any other beverage class, typically 0.01% to 0.03%, and the processing order matters more than the number on the specification.
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About E418.org
E418.org is a practical knowledge resource focused on gellan gum (E418), covering basic information, technical concepts and real-world applications.
Content is prepared by professionals from Cinogel Biotech with practical experience in gellan gum, food formulation, and plant tissue culture.