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Enterobacter aerogenes is a Gram negative rod-shaped bacterium in the same family as Esherichia coli. It can grow on many of the same selective media as Esherichia coli, including: MacConkey Agar, EMB agar and Lauryl-Tryptose broth. E. aerogenes ferments lactose, producing acid and gas like Esherichia coli and is classified as an example of coliform bacteria. There are several significant differrences between E. aerogenes and E. coli: 1) Most strains of E.coli are able to grow and produce acid from lactose in a medium such as lauryl tryptose broth or brilliant green bile broth at 44.5 degrees C. while most strains of E. aerogenes do not grow well at that temperature, E. aerogenes grows better at temperatures betwee 34 - 40 degrees C. 2) E. aerogenes carries out 2,3-butanediol fermentation and thus give a positive test in the Voges-Proskauer test while E. coli is negative. 3) E. coli is positive in the methyl red test while E. aerogenes is usually, but not always, negative (this is not the best test to rely on). 4) E.coli is positive for the indole test while E. aerogenes is negative, this is a very reliable test. 5) E. aerogenes can grow on Simmon's citrate agar while E. coli does not. You can distinguish between E. aerogenes and bacteria in the Proteus and Salmonella genera by using the hydrogen sulfide test, using either Kligler's iron agar or triple sugar iron agar. Most Proteus and Salmonella strains produce hydrogen sulfide and make a black precipitate but E. aerogenes does not. There are a lot of similarities between Enterobacter aerogenes and Klebsiella pneumonia. The urease test is one of the few tests that distinguishes E. aerogenes from K. pneumonia. Enterobacter aerogenes is a Gram negative rod-shaped bacterium in the same family as Esherichia coli. It can grow on many of the same selective media as Esherichia coli, including: MacConkey Agar, EMB agar and Lauryl-Tryptose broth. E. aerogenes ferments lactose, producing acid and gas like Esherichia coli and is classified as an example of coliform bacteria. There are several significant differrences between E. aerogenes and E. coli: 1) Most strains of E.coli are able to grow and produce acid from lactose in a medium such as lauryl tryptose broth or brilliant green bile broth at 44.5 degrees C. while most strains of E. aerogenes do not grow well at that temperature, E. aerogenes grows better at temperatures between 34 - 40 degrees C. 2) E. aerogenes carries out 2,3-butanediol fermentation and thus give a positive test in the Voges-Proskauer test while E. coli is negative. 3) E. coli is positive in the methyl red test while E. aerogenes is usually, but not always, negative (this is not the best test to rely on). 4) E.coli is positive for the indole test while E. aerogenes is negative, this is a very reliable test. 5) E. aerogenes can grow on Simmon's citrate agar while E. coli does not. You can distinguish between E. aerogenes and bacteria in the Proteus and Salmonella genera by using the hydrogen sulfide test, using either Kligler's iron agar or triple sugar iron agar. Most Proteus and Salmonella strains produce hydrogen sulfide and make a black precipitate but E. aerogenes does not. There are a lot of similarities between Enterobacter aerogenes and Klebsiella pneumonia. The urease test is one of the few tests that distinguishes E. aerogenes from K. pneumonia. Klebsiella is positive for urease production while Enterobacter is negative.
E. aerogenes is a Gram negative bacillus, therefore you will see pink rods. Furthermore, these organisms have no particular arrangement.
Enterobacter aerogenes typically stains gram-negative due to its thin peptidoglycan layer in the cell wall.
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What is Enterobacter aerogenes cell size in micrometers?
Enterobacter aerogenes cells are typically around 1-3 micrometers in length and 0.5-1 micrometer in width.
What does Enterobacter aerogenes smell like?
Enterobacter aerogenes typically does not have a distinct smell of its own. However, it can contribute to the production of foul odors in environments where it is present due to its ability to metabolize certain compounds.
What is the cellular arrangement of enterobacter aerogenes?
Enterobacter aerogenes is a Gram-negative bacteria that typically forms short chains or pairs of rod-shaped cells. It belongs to the Enterobacteriaceae family and is facultatively anaerobic, meaning it can grow both in the presence and absence of oxygen.
Can enterobacter aerogenes grow on mannitol salt agar?
Enterobacter aerogenes is not typically a salt-tolerant organism and would not be expected to grow well on Mannitol Salt Agar, which contains a high concentration of salt. This medium is more selective for salt-tolerant organisms like Staphylococcus species.
Does Enterobacter aerogenes produce gas in the Kligler Iron Agar test?
Yes, Enterobacter aerogenes can produce gas in the Kligler Iron Agar test. This species of bacteria is capable of fermenting glucose to produce gas, which can be observed as gas bubbles in the agar medium.
What is the gram stain of enterobacter cloacae?
Enterobacter cloacae is a Gram-negative bacterium. It will stain pink or red in a Gram stain procedure.
What are results for a acid-fast test for enterobacter aerogenes?
Enterobacter aerogenes is a gram-negative bacterium and typically does not retain acid-fast stains due to its cell wall structure. Therefore, a positive result on an acid-fast test would be unlikely for Enterobacter aerogenes.
What color is enterobacter aerogenes?
red
Does Enterobacter aerogenes ferment sugar?
Yes, Enterobacter aerogenes is capable of fermenting sugar as it is a facultative anaerobe that can utilize a variety of sugars, such as glucose and lactose, for energy production. Fermentation of sugar by Enterobacter aerogenes can produce various byproducts, including acids and gases.
Where is Enterobacter Aerogenes found?
E. aerogenes is generally found in the human GASTROINTESTINAL TRACt
What color would tsi media be after 48 hours incubation with enterobacter aerogenes?
The color that would TSI media be after 48 hours icubation with enterobacter aerogenes is black.
The difference between enterobacter aerogenes and citrobacter freundii?
Enterobacter aerogenes and Citrobacter freundii are both members of the Enterobacteriaceae family. While they share some similarities, they can be differentiated based on their biochemical properties, such as their ability to ferment particular sugars and produce certain enzymes. Clinically, Enterobacter aerogenes is more commonly associated with healthcare-associated infections, whereas Citrobacter freundii is a less frequent cause of infections but is known for its antibiotic resistance.
What is Enterobacter aerogenes cell size in micrometers?
Enterobacter aerogenes cells are typically around 1-3 micrometers in length and 0.5-1 micrometer in width.
What type of flagella does enterobacter aerogenes have?
Enterobacter aerogenes typically has peritrichous flagella, which are distributed all over the cell surface. These flagella help the bacterium to move and navigate through its environment.
Is enterobacter aerogenes lipase negative?
Enterobacter aerogenes is not typically positive for lipase activity. Lipase is an enzyme that breaks down fats, and some Enterobacter species may possess this enzyme, but it is not a characteristic feature of Enterobacter aerogenes. Testing for lipase production can be done using specific biochemical tests or molecular methods.
What carbohydrates can Enterobacter aerogenes ferment?
Enterobacter aerogenes can ferment a wide range of carbohydrates, including glucose, lactose, sucrose, and maltose. It possesses various enzymes to break down and metabolize these sugars for energy and growth.
What does Enterobacter aerogenes smell like?
Enterobacter aerogenes typically does not have a distinct smell of its own. However, it can contribute to the production of foul odors in environments where it is present due to its ability to metabolize certain compounds.
