Description
Kuzu starch forms heat-reversible gels that stabilize air bubbles while imparting a translucent sheen and silky mouthfeel.
Technical
When kuzu starch (extracted from Pueraria lobata root) is heated in water, its amylopectin molecules swell and form a helical structure that traps water molecules (gelation). The high viscosity of the gel matrix prevents bubble coalescence in foams. Upon cooling, hydrogen bonds strengthen the network (retrogradation).
Culinary Significance
Creates stable, glossy foams without egg whites or gelatin, ideal for vegan desserts and delicate confections where a smooth, melt-in-mouth texture is desired.
Science
Primary Reaction
Starch gelatinization (62-67°C)
Parameters
Temperature
75°C optimal
62°C to 85°C range
Time
8 min
5 min – 15 min
Equipment