Emulsification Calculator

For food applications, lecithin is typically used at 0.5–1% of the oil phase mass. For a simple vinaigrette or sauce, 0.5–0.75% is sufficient with good blending. For applications requiring extended shelf stability (dressings, spreads), 1% provides better coverage. As an aeration agent in molecular gastronomy foams, use 0.5–1% of total liquid weight.

Mayonnaise breaks (phase separation) most commonly because: (1) oil was added too quickly — oil must be drizzled in slowly while blending to allow emulsifier molecules time to coat new interface, (2) insufficient lecithin — egg yolk contains about 10% lecithin, so use whole fresh yolks, (3) temperature too cold or too hot — room temperature ingredients emulsify better, (4) too much oil — standard mayonnaise is 70–80% oil, which is near the packing limit for stable O/W emulsions.

Yes. Sunflower and soy lecithin are functionally very similar, both containing phosphatidylcholine, phosphatidylethanolamine, and phosphatidylinositol. Sunflower lecithin is preferred for those with soy allergies and is non-GMO by default. Use the same weight quantities as soy lecithin. Sunflower lecithin is often sold as a powder or liquid and dissolves equally well in warm fat or water.

In an Oil-in-Water (O/W) emulsion, oil droplets are dispersed in a continuous water phase. Examples: milk, cream, mayonnaise, most sauces. In a Water-in-Oil (W/O) emulsion, water droplets are dispersed in a continuous oil phase. Examples: butter, margarine, water-in-oil spreads. O/W emulsions feel lighter and are more digestible; W/O emulsions feel richer and more fatty. The continuous phase is the one you taste first and which coats surfaces.

Yes. Mono- and diglycerides (E471) are among the most extensively studied food additives and are classified as GRAS (Generally Recognized as Safe) by the FDA. They are produced by partial hydrolysis of triglycerides from vegetable or animal fats. They appear in thousands of processed foods including bread, margarine, peanut butter, and ice cream. Acceptable daily intake is not specified (unlimited) by the JECFA.

Use multiple stabilization mechanisms: combine an emulsifier with a hydrocolloid stabilizer (xanthan gum 0.1–0.2%, guar gum, or carboxymethylcellulose) to increase continuous phase viscosity. Optimize pH — many emulsions are most stable at pH 4–5 where protein emulsifiers carry maximum charge. Minimize temperature fluctuations. Use fine droplet size (smaller droplets settle more slowly, per Stokes' law). Consider antioxidants to prevent oxidative rancidity which can destabilize emulsions.

Yes. Natural emulsifiers in everyday foods include: egg yolk (lecithin, protein), mustard (mucilage + glucosinolates), honey (polysaccharides + proteins), garlic (saponins), avocado (lecithin), and milk proteins (casein, whey). These natural emulsifiers are generally less potent than purified commercial emulsifiers, so use larger quantities and expect less long-term stability. Mustard is particularly effective as a secondary emulsifier in vinaigrettes.

Higher shear produces smaller droplets, which are more stable (Stokes' law: settling velocity proportional to droplet radius squared). An immersion blender generates moderate shear suitable for sauces and dressings (droplet size 1–10 microns). A high-speed blender achieves finer emulsions. Industrial homogenizers (5,000–20,000 psi) produce submicron droplets for ultra-stable products like homogenized milk. Longer blending time at high shear generally improves emulsion stability.

Temperature affects emulsifier solubility, oil viscosity, and molecular mobility. Most emulsifiers dissolve better in warm liquids and distribute more evenly across the interface. Very cold oil is viscous and difficult to disperse into fine droplets. Very high temperatures can denature protein-based emulsifiers (above 70°C for most proteins) and cause thermal degradation of some synthetic emulsifiers. Most emulsification is best performed at 40–60°C, then cooled while maintaining gentle agitation.