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E.coli shows positive result for catalase test..
staphylococcus aureus and serratia marcescens too..
pseudomonas and klebsiella does not give any vigorous bubbling therefore, it shows negative result

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10y ago
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13y ago

No, it is negative.

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11y ago

It is negative

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Q: What are the results of a catalase test on Lactococcus lactis?
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What is the Lactococcus lactis ssp lactis oxidase test result?


What is the test that separates enterococcus faecalis and lactococcus lactis?

To diagnose Enterococcus faecalis: (Facultative anaerobic) First, do the Gram stain: Gram positive cocci in chains catalase test: negative PYR disc: positive

What two groups of bacteria can be differentiated with the catalase test?

The morphologically similar Enterococcus (catalase negative) and Staphylococcus (catalase positive) can be differentiated using the catalase test.

Why is it avisable to perform test of unknown catalase positive organism along with the organism you are testing?

you need to test both the experiment-organism and an organism which you already know is catalase-positive, in the same environment in order to compare the results and determine if your experiment-organism is catalase-positive. - See more at:

Why salmonella typhi is catalase positive?

it should test + for catalase but Salmonella isolates are moderate catalase reactors.

Reaction of Bacillus Megaterium in a catalase test?

Most Bacillus species are Catalase positive.

Catalase test useful for differentiation of staph?

The main criterion for differentiation between Staphylococcus and Streptococcus genera is the catalase test. Staphylococci are catalase positive whereas Streptococci are Catalase negative. Catalase is an enzyme used by bacteria to induce the reaction of reduction of hydrogen peroxide into water and oxygen.

All test results for streptococcus pyogenes?

Streptococcus pyogenes is a gram-positive bacterium caused by infections. It is tested by a catalase test that will show either a positive or negative reaction to streptococci.

What is catalase test?

Catalse Test Catalase (also known as peroxidase) is an enzyme that catalyses the breakdown of hydrogen peroxide to oxygen and water. Most higher organisms produce catalase, but in bacteriology this test is usually used to differentiate staphylococci (Catalase positive) from streptococci (Catalase negative). Chemical equation for the breakdown of hydrogen peroxide:2H2O2 → 2H2O + O2 In this test a drop of hydrogen peroxide is emulsified with the bacterial growth, if the organism is catalase positive active bubbling is seen (formation of oxygen) In catalase negative reactions no active bubbling is seen

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What is the result of catalase test for streptomyces?


What are the reagents used in the catalase test?

hydrogen peroxide