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What is the gram stain of enterobacter aerogenes?
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 type of hemolysis e coli show on blood agar is it alpha beta or gama hemolysis?
E. coli typically does not demonstrate hemolysis on blood agar plates. It usually appears as non-hemolytic or gamma hemolysis, where there is no change in the red blood cells surrounding the bacterial growth.
In the carbohydrate fermentation test you found that both E. coli and E aerogenes produced the end products acid and gas Account for the fact that E. coli is methyl red positive and E aerogenes is?
E. aerogenes is Methyl Red negative due to the fact that it enzymatically converts these acidic end products into a more basic end product through the use of Acetylmethylcarbinol.
Where is Enterobacter Aerogenes found?
E. aerogenes is generally found in the human GASTROINTESTINAL TRACt
What lab test for E aerogenes?
For Enterobacter aerogenes, common lab tests include culture and sensitivity testing on samples such as blood, urine, or sputum to identify the bacteria and determine its susceptibility to antibiotics. Molecular tests like polymerase chain reaction (PCR) can also be used for rapid and accurate detection of E. aerogenes DNA in clinical specimens. Biochemical tests, such as indole, citrate utilization, or urease tests, can help further differentiate Enterobacter species in the lab.
What may the deficiency of Vitamin E lead to?
It may lead to the hemolysis of red blood cells.
Are E. coli and e aerogenes cocco-bacillus?
E. coli is coccobacillus
What test will show you the difference between Proteus vulgaris and Morganella morganii?
alpha-glucosidase test: using 5-bromo-4-chloro-3-indolyl-alpha-D-glucopyranoside (included in chromogenic media), but not using alpha-methyl-glucoside fermentation. Cronobacter (E. sakazakii) are positive for this test and E. aerogenes are negative.
What color are smears of S. salivarius and E. aerogenes when stained with Congo red?
dfd
Why e aerogenes h2s positive?
Enterobacter aerogenes is H2S positive because it has the ability to produce hydrogen sulfide gas as a byproduct of its metabolism. This characteristic is part of the organism's biochemical profile and can be used in laboratory identification tests.
What are the biochemical tests to confirm staphylococcus?
Streptococci are not differentiated by biochemical tests, but rather by hemolysis reaction (beta Strep or alpha Strep) and sero-group (as in Group E Strep).Further, streptococcus is also identified by thr following tests:1. Coagulase.2. Haemolysin (It lyses 4% RBC suspension)3. Fibrinolysin (It can dissolve a fibrin clot)4. Strp. Pneumoniae also gives a positive bile solubility test.5. It ferments Inulin (A sugar)
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.
