Gellan Gum in Marshmallows

Marshmallows depend on a delicate structure of sugar, water, and air.

The product needs to be soft and light, but it also needs enough strength to hold its shape during cutting, packaging, transport, and storage.

Gellan gum can be useful in this type of formulation because it can create a supporting gel structure at relatively low concentrations.

It is especially interesting for manufacturers developing gelatin-free or plant-based marshmallow products.

Why Marshmallows Need a Supporting Structure

A marshmallow is not simply a sweet foam.

The air bubbles need to remain trapped inside a continuous structure.

If the structure is too weak, the bubbles gradually collapse and the product loses volume.

If the structure is too strong, the marshmallow can become dense, firm, or rubbery.

The challenge is therefore finding the right balance between aeration and structural strength.

Gellan gum can contribute to that structure.

Low Acyl Gellan Gum for Stronger Structure

Low acyl gellan gum produces a relatively firm gel.

This can help with shape retention when the marshmallow needs to maintain clean edges after cutting.

It may also be useful when the product needs to tolerate warmer processing or storage conditions.

But too much structure can work against the desired marshmallow texture.

A good marshmallow should still feel soft when bitten.

The target is not maximum gel strength.

It is enough structure to support the foam.

High Acyl Gellan Gum for Softer Texture

High acyl gellan gum produces a softer and more elastic gel structure.

This may be interesting when the formulation needs more flexibility.

A softer structure can help avoid the brittle texture that may occur with an overly firm gel system.

For manufacturers developing different styles of marshmallow, testing both high acyl and low acyl gellan gum can provide useful information.

The best choice depends on the desired bite and shape retention.

The Foam Structure Comes First

One common mistake is focusing entirely on the hydrocolloid.

But the aeration process is equally important.

A marshmallow with poor air incorporation cannot always be fixed by adding more gellan gum.

The manufacturer needs to control:

• Mixing speed

• Aeration time

• Temperature

• Solids content

• Foam density

• Cooling rate

The hydrocolloid provides support, but the initial foam structure still needs to be created properly.

Hydration Is Critical

Gellan gum must be properly dispersed and hydrated before it can provide its intended functionality.

This can be challenging in a high-sugar marshmallow system.

Sugar and other solids can interfere with hydration if the gum is not handled correctly.

A practical process may therefore require a separate hydration step before the gum is incorporated into the main formulation.

The exact process depends on the equipment and formula.

The important point is to avoid assuming that adding dry gellan gum directly into a concentrated sugar system will produce consistent results.

Sugar Concentration Changes the Behavior

Marshmallow formulations often contain significant amounts of sugar or glucose syrup.

These ingredients affect water availability, viscosity, solids content, and the final texture.

As a result, the same gellan gum concentration can produce different results in formulations with different sugar ratios.

When comparing formulations, keep the sugar system constant.

Otherwise, it becomes difficult to determine whether a change in texture came from the gellan gum or from the sugar system.

Temperature During Processing Matters

Marshmallow production involves heating and cooling stages.

The gellan gum system must be able to survive the required processing conditions and then develop the desired structure during cooling.

The timing of aeration is particularly important.

If the system becomes too structured before aeration is complete, it may become difficult to incorporate enough air.

If the structure develops too slowly, the foam may not have enough support.

This is why the order of heating, aeration, and cooling should be considered part of the formulation.

Plant-Based Marshmallows

One interesting application is gelatin-free marshmallow.

Traditional marshmallows commonly use gelatin to provide structure.

A gellan gum-based system can provide an alternative approach for manufacturers developing vegetarian or vegan products.

However, replacing gelatin is not simply a matter of adding gellan gum at the same dosage.

The entire texture needs to be redesigned.

Gelatin provides a combination of elasticity, firmness, and foam stabilization that is difficult to reproduce with one hydrocolloid alone.

A gellan gum system may therefore need to be combined with other ingredients.

Combining Gellan Gum With Other Hydrocolloids

A mixed hydrocolloid system can sometimes provide a better balance.

Gellan gum can contribute structural strength while another ingredient contributes softness or elasticity.

This can be useful when a single gum produces a texture that is too hard or too brittle.

However, adding more ingredients also increases formulation complexity.

A good development strategy is to first understand what gellan gum does by itself.

Then introduce another hydrocolloid only when there is a specific texture problem to solve.

Cutting and Packaging

Marshmallows are often cut after the structure has developed.

This is a practical test that is sometimes overlooked.

A formulation may have good texture but still cut poorly.

The product may stick to the cutting equipment, deform during cutting, or produce uneven edges.

The manufacturer should therefore evaluate:

• Cutting temperature

• Cutting speed

• Product firmness

• Surface stickiness

• Shape retention

Packaging should also be tested because compression during packing can deform a soft marshmallow.

Heat Stability Can Be Useful

Marshmallows may experience elevated temperatures during transportation and storage.

A product that performs well in a controlled room-temperature laboratory may soften excessively in a hot warehouse or delivery vehicle.

Gellan gum can be useful when additional thermal stability is required.

This does not mean the marshmallow will remain completely unchanged at high temperature.

The goal is to improve structural resistance enough to reduce deformation under realistic conditions.

A Simple Trial Plan

Start with the existing marshmallow formula as the control.

Then prepare several trials with increasing gellan gum levels.

Keep the aeration process constant.

Compare:

• Foam density

• Volume

• Shape retention

• Cutting performance

• Bite

• Elasticity

• Stickiness

• Heat stability

• Storage stability

If developing a gelatin-free product, compare the gellan gum system directly with the current gelatin product.

This makes it much easier to identify which properties still need improvement.

Common Problems

The marshmallow collapses

Check the foam structure and aeration process before simply increasing the gum level.

The product is too firm

The gel structure may be too strong.

A lower gellan gum concentration or a softer hydrocolloid system may be needed.

The product feels rubbery

The hydrocolloid structure may be dominating the foam texture.

Review both gum concentration and the overall solids balance.

The marshmallow becomes sticky

Check moisture content, sugar composition, drying, and packaging humidity.

The problem may not be caused by gellan gum.

Final Thoughts

Gellan gum can be an interesting ingredient for marshmallow products where structural support, shape retention, or gelatin-free formulation is important.

Low acyl gellan gum can provide stronger structure, while high acyl gellan gum offers a softer and more elastic alternative.

The most important point is that gellan gum is supporting an aerated system.

It cannot compensate for poor aeration, incorrect solids content, or uncontrolled processing.

For commercial development, the best approach is to optimize the foam and gel structure together and then test the finished marshmallow under real cutting, packaging, and storage conditions.