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Bacteriology

Important Facts About Cholera

Last updated on May 30th, 2021Cholera is an acute infection of the gut, caused by ingestion of food or water contaminated with the bacterium Vibrio cholerae O1 or O139.  Other serogroups of Vibrio cholerae may cause diarrheal disease and […]

Various types of Oxidase test
Biochemical Tests

Oxidase test: Principle, Procedure, Results

Last updated on June 21st, 2021The oxidase test is used to identify bacteria that produce cytochrome c oxidase, an enzyme of the bacterial electron transport chain.  When present, the cytochrome c oxidase oxidizes the reagent (tetramethyl-p-phenylenediamine dihydrochloride) to indophenols, a purple […]