emulsifier


Also found in: Dictionary, Thesaurus, Medical, Legal, Wikipedia.

emulsifier

an agent that forms or preserves an emulsion, esp any food additive, such as lecithin, that prevents separation of sauces or other processed foods

Emulsifier

 

a substance that facilitates emulsification and imparts stability to emulsions. The ability of emulsifiers to emulsify results from their capacity to accumulate on the boundary of two liquid phases, thus lowering the interphase tension, and to create a protective layer around the droplets, thus preventing coagulation and coalescence. The principal types of emulsifiers are soaps, soaplike surfactants, soluble compounds of high molecular weight, and highly dispersed solids.

A rule of thumb in the selection of emulsifiers is that soluble emulsifiers are always more soluble in the dispersion medium than in the dispersed phase and that insoluble solid emulsifiers are similarly better wetted by the dispersion medium. Therefore, sodium oleate, polyvinyl alcohol, and hydrophilic clay minerals, such as bentonites and kaolin, are suitable for producing oil-in-water emulsions, and metal soaps, carbon black, and substances containing asphalt and tar are suitable for producing water-in-oil emulsions (seeHYDROPHILIC AND HYDROPHOBIC CAPACITY). Mixtures are usually more effective emulsifiers than pure substances and are more often used as components of emulsions.

L. A. SHITS

emulsifier

[ə′məl·sə‚fī·ər]
(materials)

emulsifier

A substance which modifies the surface tension of colloidal droplets, keeping them from coalescing and keeping them suspended.
References in periodicals archive ?
XPLOR(TM) dry emulsifiers are the first products in a growing family of dry oilfield products from Georgia-Pacific Chemicals, adding to its portfolio of liquid emulsifiers, wetting agents and fluid loss additives.
Addition of emulsifiers to food seemed to fit the time frame and had been shown to promote bacterial translocation across epithelial cells.
Studies have shown that high ash content of bread prepared from brown rice flour and emulsifier can contribute to higher amounts of minerals [7].
Ethoxylates, for instance, are still widely used as emulsifiers in personal care formulations, although they are based on fossil raw materials.
With the introduction of Dyneon Adona Emulsifier, the company is now the first to take the final step in eliminating APFO entirely from manufacturing processes.
By changing the cationic emulsifier, it is possible to design specific performance in a formulation as dictated by the product profile and consumer needs.
The 300-Series Mixer Emulsifier allows you to add solids to a continuous system with an overhead recirculation tank and tangential piping that promotes a vigorous vortex.
Trust director Dr Tim Lobstein said: "By the time children reach 18 they are likely to have eaten around 70 kilos of colourings, artificial sweeteners, preservatives, emulsifiers and flavourings.
A simple emulsifier therapy might prove much more effective, Kane theorizes.
New from Jeen International are two patented cationic emulsifiers in free-flowing powder format to address a wide array of formulation challenges for both skin and hair care.
Developed by Rousselot's European Application Laboratory, this innovative gelatine for which a patent has been filed acts both as an emulsifier and a stabilizer in an oil-in-water emulsion.
Rhodapex LA 300 SB is a highly ethoxylated anionic emulsifier designed to improve latex chemical stability.