Description
Sugar binds free water molecules, creating hypertonic environment that inhibits microbial growth while concentrating flavors.
Technical
Sucrose inversion to glucose/fructose (pH <3.5) increases osmotic pressure. Pectin (galacturonic acid polymers) forms 3D networks with calcium ions and sugar at 65-68°Brix. Phenolic compounds undergo oxidative polymerization.
Culinary Significance
Transforms perishable fruits into shelf-stable products while intensifying flavor through Maillard reactions (60-110°C) and caramelization (>160°C). Critical for pastry glazes, sauce bases, and flavor layering.
Science
Primary Reaction
Pectin gelation
Parameters
Temperature
104°C optimal
60°C to 110°C range
Maillard zone (60-110°C) for flavor development
Time
45 minutes
20 minutes – 2 hours
Depends on fruit water content
Equipment
