hydrogen donor


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hy·dro·gen do·nor

a metabolite from which hydrogen is removed (by a dehydrogenase system) and transferred by a hydrogen carrier to another metabolite, which is thus reduced.

hy·dro·gen do·nor

(hī'drō-jen dō'nŏr)
A metabolite from which hydrogen is removed (by a dehydrogenase system) and transferred by a hydrogen carrier to another metabolite, which is thus reduced.

hydrogen donor

In oxidation-reduction reactions, a substance that gives up hydrogen atoms to another substance, the acceptor.
See: hydrogen acceptor
See also: donor
References in periodicals archive ?
The review of related literatures on the incorporation of hydrogen donor, indicate that hydrogen donor help to remove heteroatoms attached to the asphaltenes and also inhibit coke formation by hydrogenation of coke precursors formed during thermal-catalytic cracking of the heavy oil.
The effect of hydrogen donor additive on the viscosity of the heavy oil during steam stimulation, Energy & Fuel, 16 (4): 842-846
Our results suggest the formation of palladium hydride (Pd-H) via hydrogen transfer from the hydrogen donor to the palladium catalyst; this results in the hydride donating a hydrogen to the double bond of the sunflower oil and generates a semi-hydrogenated intermediate that is converted into the saturated product by the transfer of another hydrogen from the hydride.
Amines are the most efficient hydrogen donors. The efficiency depends upon their oxidation potential.
Hit compounds from the database with estimated activity less than 0.1 [micro]M were selected for further screening using Lipinski's rule of five; compounds have (i) molecular weight less than 500, (ii) hydrogen donors less than 5, (iii) hydrogen acceptors less than 10, and (iv) an octanol/water partition coefficient (LogP) value less than 5.
Concentration is obviously very important in the competition among various hydrogen donors. For example, a low concentration of phenolic hydrogen will not greatly reduce peroxide efficiency.
Materials of this type include hydrogen donors such as the hindered phenols and aromatic amines (ref.
L* abstracts hydrogen atoms from hydrogen donors to yield D* radicals, which are very active to initiate polymerization of acrylate derivatives.