Microbiology - 008 - Catalase Test
Microbiology - 008 - Catalase Test
Jun 21, 2022
iastate.edu
Catalase test 🧪 ✔️The catalase test is a quick and easy method for differentiation of Streptococcus and Staphylococcus. ✔️All Streptococcus species are catalase negative and Staphylococcus are catalase positive (bubble production). ✔️The medium used must NOT have blood incorporated since the erythrocytes have catalase activity and can give false positive results. ✔️The test should be done on young cultures 18-24 hours. ✔️The reagent used is 3% hydrogen peroxide. . . #microbiologist #labtech #me
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The catalase test tests for the presence of catalase, an enzyme that breaks down the harmful substance hydrogen peroxide into water and oxygen. If an organism can produce catalase, it will produce bubbles of oxygen when hydrogen peroxide is added to it Purpose of Catalase Test The morphologically similar Enterococcusor Streptococcus (catalase negative) and Staphylococcus (catalase positive) can be differentiated using the catalase test. Also valuable in differentiating aerobic and obligate anaer
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