emulsifier
ee-MUL-sih-fy-er
/ɪˈmʌlsɪfaɪər/
A substance that stabilizes an emulsion, allowing liquids that usually don't mix (like oil and water) to stay blended.
In processed foods, emulsifiers are what give ice cream its smooth texture and prevent peanut butter from separating.
The story behind the word. Derived from the Latin 'emulgere', which means 'to milk out.' This refers to the way an emulsifier forces two unwilling liquids—like oil and water—to blend into a creamy, milk-like consistency.
Word relationships
- surfactant: Surfactant is a broader chemical term for substances that reduce surface tension; emulsifiers are a specific type used in food.
Commonly confused with
- stabilizer: An emulsifier mixes two things; a stabilizer keeps them from moving or changing once mixed.
Word family
- emulsify (verb): To mix two unmixable liquids.
- emulsion (noun): A mixture of two liquids that would ordinarily not mix.
Collocations
- natural emulsifier
- synthetic emulsifier
- emulsifier agent
Example sentences
- "Egg yolk acts as a natural emulsifier, binding the oil and vinegar together into a creamy sauce." The science of mayonnaise.
- "Lecithin is a common emulsifier used in chocolate to ensure a uniform texture." Industrial food production.
Memory hook
Think of 'Milk' (Mul). Milk is a natural emulsion of fat and water. An e-MUL-sifier makes things like milk. The oil-water blender.
When not to use
Don't use this for thickening (that's a stabilizer or thickener); use it specifically for the blending of oil and water.
Fun facts
- Without emulsifiers, your favorite bottled salad dressing would separate into layers of oil and vinegar within seconds.
Related words
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