micelle

(redirected from micell)
Also found in: Dictionary, Thesaurus, Encyclopedia.

micelle

 [mi-sel´]
a supermolecular colloid particle, most often a packet of chain molecules in parallel arrangement.

mi·celle

(mi-sel', mī-sel'),
1. Nägeli term for elongated sub(light)microscopic particles, detected in hydrogels, of supramolecular character and crystalline structure; now defined as one of two classes of colloidal particle: those consisting of many molecules, the other class being single macromolecules light- or submicroscopic in size. A micelle is thus a structural unit of the disperse phase in a gel, a unit whose repetition in three dimensions constitutes the micellar structure of the gel; it does not denote the individual particles in free suspension or solution, or the unit structure of a crystal.
2. Any water-soluble aggregate, spontaneously and reversibly, formed from amphiphile molecules.
3. A hypothetical ordered region in a natural fiber such as cellulose.
[L. micella, small morsel, dim. of mica, morsel, grain]

micelle

(mī-sĕl′)
n.
A submicroscopic aggregation of molecules, as a droplet in a colloidal system.

mi·cel′lar (-sĕl′ər) adj.

micelle

Chemistry
An organised component of colloidal suspensions, consisting of spherical or laminar aggregates of polar surface-active molecules (soaps). The hydrophilic portion of the molecule interacts with the other members of the aqueous solution (i.e., are oriented outside in water); the hydrophobic ends huddle together within the micelle.

Micelles of the small intestine are composed of bile salts with fatty acids and monoglycerides released by pancreatic lipase.
 
Molecular biology
The structure formed by amphipathic molecules in solution, which places the polar group toward the solution and the hydrophobic group toward the interior.

micelle

a cluster of phospholipid molecules in the gut which are dispersed by the action of BILE salts.

mi·celle

(mi-sel')
1. Elongated sub(light)microscopic particles, detected in hydrogels, of supramolecular character and crystalline structure.
2. Any water-soluble aggregate, spontaneously and reversibly, formed from amphiphile molecules.
3. A hypothetical ordered region in a natural fiber such as cellulose.
[L. micella, small morsel, dim. of mica, morsel, grain]

micelle (mīsel´),

n a space formed by the brush structure of fibrils in colloidal gels. The spaces are occupied by water in hydrocolloid impressions.

micelle

a supermolecular colloid particle, most often a packet of chain molecules in parallel arrangement. A stage in the luminal phase of fat digestion; bile salts form spheres containing fatty acids, monoglycerides and the fat-soluble vitamins.

critical micelle concentration
the concentration of bile salts in solutions at which they aggregate into poymolecular aggregates called micelles.
References in periodicals archive ?
The equity investment provides Micell with a partner and funding source for exploring other applications in coating technology.
The Micell group combines powerfully innovative and creative capabilities in developing CO2-based process solutions with a proven track record in providing commercially viable integrated CO2-based systems.
Micell Technologies is a pioneer in the development of innovative carbon dioxide technology for a variety of industries.
We are extremely pleased to have Kirk Kinsell join the Micell team.
Binding of bile salts, phospholipids and cholesterol from mixed micells by bile acid sequestrans and dietary fibers.