S.maltophila
positive
No, Serratia and Klebsiella test positive for citrate. E.Coli tests negative.
M. Morganii is citrate negative
it tests the ability of a bacteria to use citrate as its sole carbon source. if its positive, it will raise the pH and there will be no acid in the end product.
This Bacillus is the source of BamH 1 restitution enzyme, and as the name indicates it freaks down starch, but I know nothing of citrate utilization by this bacteria.
Bacillus megaterium
bacillus subtilis
positive
No, Serratia and Klebsiella test positive for citrate. E.Coli tests negative.
M. Morganii is citrate negative
The B.cereus has a positive citrate test and a negative Voges Proskauer.
Most bacteria in Tribe V are able to utilize Citrate, with the exception of Hafnia and Pantoea (+/-). The 2 most common Klebsiella (oxytoca and pneumoniae), can utilize citrate, so should be citrate positive.
E. Coli
citrate result is positive in case of pseudomonas aeroginosa. slant and butt both will be positive
Klebsiella sp.
Based on my own test, Shigella flexneri tests negative for the citrate test.
in the absence of glucose or lactose , some bacteria are able to use citrate as only source of carcon. alkaline pH change the bromothymol blue indicator from green to blue. pseudomonas can not ferment the glucose and the lactose so it use the citrate as carbon source.