Description
Ground mustard seeds stabilize oil-water emulsions via mucilage and protein interactions.
Technical
Mustard seeds contain myrosinase-activated glucosinolates (sinigrin) that release isothiocyanates, while their mucilaginous polysaccharides (galactomannans) and proteins (napin, cruciferin) provide emulsifying properties through interfacial film formation.
Culinary Significance
Used for centuries in vinaigrettes and sauces, mustard emulsification creates stable, textured dressings without egg or dairy. The technique works best with freshly ground seeds and benefits from a 5-10 minute hydration period before whisking in oil.
Science
Primary Reaction
Mucilage hydration and protein-lipid adsorption
Parameters
Temperature
°C to °C range
Higher temps accelerate mucilage release but degrade proteins
Time
10-20 min
2 min – 1 hr
Longer hydration increases viscosity
Equipment