chelation

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Related to Chelant: chelate compound, chelator

che·la·tion

(kē-lā'shŭn),
Complex formation involving a metal ion and two or more polar groupings of a single molecule; in heme, the Fe2+ ion is chelated by the porphyrin ring. Chelation can be used to remove an ion from participation in biologic reactions, as in the chelation of Ca2+ of blood by EDTA, which thus acts as an anticoagulant.
[G. chēlē, claw]
Farlex Partner Medical Dictionary © Farlex 2012

che·la·tion

(kē-lā'shŭn)
Complex formation involving a metal ion and two or more polar groupings of a single molecule; can be used to remove an ion from participation in biologic reactions, as in the chelation of Ca2+ of blood by ethylenediaminetetraacetic acid, which thus acts as an anticoagulant in vitro.
[G. chēlē, claw]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

chelation

the binding of a metal ion to an organic molecule from which it can later be released. In complex molecules, chelation results in, for example, zinc binding with amino acids in carboxypeptidase enzymes. Some chelating agents, such as penicillamine, are drugs used to treat metal poisoning: the metal is bound to the drug and can then be excreted safely Chelation also enables plants to take up metal ions such as iron that are not readily available in a free state.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Chelation

The process by which a molecule encircles and binds to a metal and removes it from tissue.
Mentioned in: Heavy Metal Poisoning
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

che·la·tion

(kē-lā'shŭn)
Complex formation involving a metal ion and two or more polar groupings of a single molecule.
[G. chēlē, claw]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
The Amines and Chelants plant at Seal Sands will be razed in the next few months, after the company claimed "challenging operational conditions" had brought it to a point where it could not sustain an economically viable site".
The Dow Amines and Chelants business at Seal Sands will idle production around the beginning of April due to "increasingly challenging operational and market conditions".
This detergent composition is comprised of chelant comprising glutamic-N,N-diacetic acid or a derivative thereof; a surfactant system consisting of an anionic surfactant, an ethoxylated nonionic surfactant and a coco dimethyl amine oxide amphoteric surfactant present at a level from approximately 0.5% to approximately 10% by weight of the total composition.
that act as chelants that extract the metal ions from the hard water, reducing the chances of hair exposure to it.
Chelating agents, also called chelants, sequestering agents, or complexing agents, form stable complexes after mixing with metal ions.
Bell, Synthesis and characterization of cyclomaltoheptaose-based metal chelants as probes for intestinal permeability, Carbohydrate Res., 267, 49 (1995).
Burnaby, Canada, May 01, 2015 --(PR.com)-- According to a recently published report by TechSci Research, “Global Chelants Market Forecast & Opportunities, 2020”, global chelants market is projected to cross USD5.4 billion by 2020.
The Amines and Chelants plant at Seal Sands was shut down after the company claimed "challenging operational conditions" meant it could not sustain the site.
Effect of chelants on gellan gum rheological properties and setting temperature for immobilization of living Bifidobacteria.
Chelating agents, or chelants, are ligands that interact strongly with metals and so are used in a wide array of applications.
Components of a good disinfectant include the water quality used, an antimicrobial compound, an oxidant, chelants to tie up available ions like iron or calcium, solvents, and a base or acid component.