Polysaccharide Emulsions & Marshmallow Viscosity
“Colloidal Stability of Aerated Southern Confections”
Polysaccharide Emulsions Simulator
Rheological modeling & dynamic physical mapping of this topic
Input Control Parameters
Adjusts molecular kinetic movement and thermal agitation coefficients.
Sets the percentage of colloidal particles suspended within the system.
Regulates internal shear resistance and electrostatic clay platelet binding.
Microscopic Particle Lattice
System Calculations
1The Colloid Structure of Marshmallow Fluff
Marshmallow toppings are complex gas-in-liquid emulsions. Gelatin proteins lower surface tension, allowing air to be whipped into tiny bubbles that are suspended in a highly concentrated, viscous sucrose-and-glucose syrup.
- Protein Foam: Gelatin coats air bubbles, preventing coalescence.
- Syrup Viscosity: Concentrated sugars prevent water from draining out of the foam.
2Gelatin Sol-Gel Transition
As the pie cools, the stretched gelatin polypeptide chains form a three-dimensional triple-helix network. This locks the sugar-water molecules and air bubbles in a stable, rubbery gel.
- Sol-Gel Transition: Occurs rapidly as temperature drops below 35°C.
- Triple-Helix Bonding: Reversible hydrogen bonds give marshmallow its springiness.
3Baking Response and Thermal Expansion
When exposed to high heat under a broiler, the trapped air bubbles expand. Simultaneously, the sugar caramelizes, forming a thin, brown, crispy crust that locks in the molten interior.
- Thermal Expansion: Charles's Law dictates the expanding foam volume.
- Maillard Browning: Reducing sugars react with proteins to produce a caramelized skin.