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The oxidase test is performed using a reducing agent to detect bacteria’s ability to produce cytochrome c oxidase, an enzyme in the electron transport chain. The reducing agent (TMPD)) changes or produces a purple color as it become oxidized. Pseudomoonas aeruginosa: pruple color formed indicating the presence of cytochrome c oxidase on the oxidase strip impregnated with TMPD. Escherichia coli: no purple color formed indicating there is no cytochrome c oxidase.

Oxydase // détection de cytochrome-oxydase ; réactif tétraméthyl-P-phénylènediamine 1% = receveur artificiel d'électrons ; Bleu = positif (oxydé), Incolore = négatif (réduit)

from Robinson Street Books: Used and Rare

Cytochrome C Oxidase Activity of Various Tissues of the American Cockroach, Periplaneta americana (L.)

Title Cytochrome C Oxidase Activity of Various Tissues of the American Cockroach, Periplaneta americana (L.) Author Sacktor, Bertram and Bodenstein, Dietrich Bi

Phylogeny of scale-worms (Aphroditiformia, Annelida), assessed from 18SrRNA, 28SrRNA, 16SrRNA, mitochondrial cytochrome c oxidase subunit I (COI), and morphology

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