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2,3-Dimercapto-1-propanesulfonic acid (abbreviated DMPS) and its sodium salt (known as Unithiol) are chelating agents that form complexes with various heavy metals. They are related to dimercaprol, which is another chelating agent. The synthesis of DMPS was first reported in 1956 by V. E. Petrunkin. [2]
Chelation (/ k iː ˈ l eɪ ʃ ən /) is a type of bonding of ions and their molecules to metal ions. It involves the formation or presence of two or more separate coordinate bonds between a polydentate (multiple bonded) ligand and a single central metal atom.
These compounds chelate metals such as iron and zinc and reduce the absorption of these nutrients, [18] and they also inhibit digestive enzymes and may also precipitate proteins. [ 19 ] Saponins in plants may act like antifeedants [ 20 ] [ 21 ] and can be classified as antinutrients.
Consumer Reports said heavy metals linked to serious health problems can be found in many foods and drinking water, so it is important to know which foods contain them to limit your overall intake ...
A new Clean Label Project report suggests some protein powders contain heavy metals lead and cadmium. See which ones are safe here, plus what an expert advises.
Many metals, particularly heavy metals are toxic, but some are essential, and some, such as bismuth, have a low toxicity. Metals in an oxidation state abnormal to the body may also become toxic: chromium(III) is an essential trace element, but chromium(VI) is a carcinogen. Only soluble metal-containing compounds are toxic.
The metal must dissolve in something the plant roots can absorb. The plant roots must absorb the heavy metal. The plant must chelate the metal to both protect itself and make the metal more mobile (this can also happen before the metal is absorbed). Chelation is a process by which a metal is surrounded and chemically bonded to an organic compound.
It is the precursor of phytochelatins, glutathione oligomers that chelate heavy metals such as cadmium. [29] Glutathione is required for efficient defence against plant pathogens such as Pseudomonas syringae and Phytophthora brassicae. [30] Adenylyl-sulfate reductase, an enzyme of the sulfur assimilation pathway, uses glutathione as an electron ...
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