Catalase test: Difference between revisions
From IDWiki
mNo edit summary |
m (typo) |
||
| Line 1: | Line 1: | ||
*Used to differentiate a number of bacteria: |
*Used to differentiate a number of bacteria: |
||
**[[Staphylococcus species]] (positive) from [[Streptococcus species]] and [[Enterococcus species]] (negative |
**[[Staphylococcus species]] (positive) from [[Streptococcus species]] and [[Enterococcus species]] (negative) |
||
**Aerotolerant strains of [[Clostridium species]] (negative) from [[Bacillus species]] (positive) |
**Aerotolerant strains of [[Clostridium species]] (negative) from [[Bacillus species]] (positive) |
||
**Members of the [[Enterobacteriaceae]] family (positive) from other Gram-negative bacilli |
**Members of the [[Enterobacteriaceae]] family (positive) from other Gram-negative bacilli |
||
Revision as of 01:09, 28 July 2020
- Used to differentiate a number of bacteria:
- Staphylococcus species (positive) from Streptococcus species and Enterococcus species (negative)
- Aerotolerant strains of Clostridium species (negative) from Bacillus species (positive)
- Members of the Enterobacteriaceae family (positive) from other Gram-negative bacilli
- Detects the presence of catalase, which catalyzes the conversion of hydrogen peroxide into water and oxygen
- Mix a small sample of bacteria with 3% hydrogen peroxide
- Positive if bubbles appears within 10 seconds
- Negative if no or only a few bubbles
