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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.
What else can I help you with?
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 ferments lactose and glucose as well as producing gas. It does not produce H2S. Occasionally the slant may revert to an alkaline reaction even though lactose has been fermented. Another lactose test should be formed, such as the reaction on MacConkey agar
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?
Enterobacter aerogenes is a Gram-negative, oxidase negative, catalase positive, citrate positive, indole negative, rod-shaped bacterium that is generally found in the human gastrointestinal tract. It is amylase negative.
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?
Yes it is. You can easily check it out yourself by using a tributyrine based agar. If Enterobacter aerogenes builds a lipase action enzyme, the surrounding of your colonies will be much clearer. If you have any other questions, I suggest you the Bergey's manual of systematic bacteriology.
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.
