II. Definitions

  1. Redox Reaction (Oxidation-Reduction, Oxidoreductase)
    1. Oxidation-Reduction Reaction in which a Reducing Agents transfers electrons to an Oxidizing Agent
  2. Reducing Agent (Reductant)
    1. Substances that donate an electron, hydrogen or other element or compound that decreases its positive valence
    2. Occurs in a Redox Reaction (e.g. biosynthesis) with a net loss of electrons from the Reducing Agent
    3. Examples of mitochondrial agents with reducing power: NADH, NADPH, FADH2
  3. Oxidizing Agent (Oxidant)
    1. Substance that accepts an electron, hydrogen or other element or compound from a Reducing Agent

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Ontology: Oxidation-Reduction (C0030012)

Definition (GO) A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons. [GOC:dhl, GOC:ecd, GOC:jh2, GOC:jid, GOC:mlg, GOC:rph]
Definition (MSHCZE) Chemická reakce při které je elektron přenesen z jedné molekuly do druhé. Molekula darující elektron je redukční činitel - reduktant, molekula přijímající elektron je oxidační činitel - oxidant. Redukční a oxidační síly fungují jako spojená dvojice reduktant-oxidant nebo redox pár. R
Definition (NCI) All electron-transfer reactions are considered oxidation/reduction reactions. The substance gaining electrons ("oxidizing agent" or "oxidant") is oxidizing the substance that is losing electrons ("reducing agent" or "reductant"). In the process, the "oxidizing agent" is itself reduced by the "reducing agent."(from Electrochemistry Dictionary; http://electrochem.cwru.edu/ed/dict.htm)
Definition (CSP) chemical reaction in which electrons are transferred from one reactant to another.
Definition (MSH) A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471).
Concepts Molecular Function (T044)
MSH D010084
SnomedCT 84294004
English Oxidation Reduction, Oxidation-Reduction, Redox, Oxidoreduction, Oxidation-reduction, function, oxidoreductase process, oxidation reduction reactions, oxidation-reduction, redox state, redox, oxidation reduction, oxidation-reduction process, oxidation reduction reaction, Oxidation-reduction reaction, Oxidation-reduction, Oxidation-reduction, function (observable entity), Oxidation-reduction (function), Oxidation/Reduction
Swedish Oxidation-reduktion
Czech oxidace-redukce, oxidoredukční reakce, redox reakce, RedOx reakce
Finnish Hapetus-pelkistys
French Oxydo-réduction, Oxydoréduction
Russian VOSSTANOVLENIE-OKISLENIE, OKISLITEL'NO-VOSSTANOVITEL'NYE REAKTSII, OKISLENIE-VOSSTANOVLENIE, ВОССТАНОВЛЕНИЕ-ОКИСЛЕНИЕ, ОКИСЛЕНИЕ-ВОССТАНОВЛЕНИЕ, ОКИСЛИТЕЛЬНО-ВОССТАНОВИТЕЛЬНЫЕ РЕАКЦИИ
Japanese 酸化, 還元, 酸化-還元, レドックス
Italian Redox, Ossido-riduzione
Croatian OKSIDACIJA-REDUKCIJA
Polish Oksydoredukcja, Utlenianie-redukcja, Potencjał oksydoredukcyjny, Oksydacja
Spanish Oxirreducción, oxidorreducción (entidad observable), oxidorreducción (función), oxidorreducción, Redox, Oxidación-Reducción
Portuguese Oxidorredução, Oxidação-Redução, Oxirredução, Redox
German Oxidation-Reduktion, Redox
Dutch Oxidatie-reductie, Redox, Reductie, oxidatie-

Ontology: Oxidants (C0085403)

Definition (MSH) Electron-accepting molecules in chemical reactions in which electrons are transferred from one molecule to another (OXIDATION-REDUCTION).
Definition (CSP) reactant in a redox reaction which undergoes a net gain of electrons.
Concepts Chemical Viewed Functionally (T120)
MSH D016877
LNC LP99402-7, MTHU035684
English Agents, Oxidizing, Oxidants, Oxidizing Agents, oxidizing agent, oxidant, electron acceptor, acceptors electron, oxidants, Oxidizing agents
French Oxydants, Agents oxydants
Swedish Oxidanter
Czech oxidancia
Finnish Oksidantit
Russian OKISLITELI, OKSIDANTY, OKISLITEL'NYE VESHCHESTVA, ОКИСЛИТЕЛИ, ОКИСЛИТЕЛЬНЫЕ ВЕЩЕСТВА, ОКСИДАНТЫ
Japanese オキシダント, 酸化体, 酸化薬, 酸化剤
Italian Ossidanti, Sostanze ossidanti
Croatian Not Translated[Oxidants]
Polish Utleniacze, Oksydanty
German Oxidanzien, Oxydierende Substanzen
Portuguese Oxidantes
Spanish Agentes Oxidantes, Oxidantes

Ontology: Reducing Agents (C0376446)

Definition (MSH) Materials that add an electron to an element or compound, that is, decrease the positiveness of its valence. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
Definition (CSP) reactant in a redox reaction which undergoes a net loss of electrons; do not confuse with WEIGHT CONTROL AGENT.
Concepts Indicator, Reagent, or Diagnostic Aid (T130)
MSH D019163
English Agents, Reducing, Reducing Agents, Reductants, reducing agent, reducing agents
French Agents réducteurs, Agents de réduction, Réducteurs
Swedish Reduktanter
Czech redukční činidla
Finnish Pelkistävät aineet
Italian Riducenti, Agenti riducenti
Russian VOSSTANOVITELI, VOSSTANAVLIVAIUSHCHIE SREDSTVA, REDUKTANTY, ВОССТАНАВЛИВАЮЩИЕ СРЕДСТВА, ВОССТАНОВИТЕЛИ, РЕДУКТАНТЫ
Japanese 還元剤
Polish Czynniki redukujące utlenianie, Środki zmniejszające utlenianie
Portuguese Substâncias Redutores, Redutores Químicos, Agentes Redutores, Redutores de Nox, Redutores
Spanish Sustancias Reductoras, Reductores de Nox, Reductores Químicos, Agentes Reductores, Reductores
German Reduktionsmittel, Reduktoren