Elektronendonors
Elektronendonors (electron donors) are substances that donate electrons in redox reactions. In such reactions the donor is oxidized while the acceptor is reduced. The tendency of a species to donate electrons is described by its standard redox potential (E°); generally, donors with more negative E° values are stronger reducing agents.
Examples include inorganic metals such as zinc, iron, and magnesium, which readily donate electrons to metal
In biology, electron donors supply reducing equivalents for energy conversion. Common biological donors include NADH and
Donor strength depends on solvent, pH, temperature, and the relative redox potentials of donor and acceptor.