What are the characteristics of Citrobacter freundii?
What are the characteristics of Citrobacter freundii?
Citrobacter freundii are long rod-shaped bacteria typically 1-5 μm in length [1]. Most C. freundii cells are surrounded by many flagella used to move about, but a few are non-motile. Its habitat includes the environment (soil, water, sewage), food, and the intestinal tracts of animals and humans [1].
What is Citrobacter freundii complex?
Citrobacter freundii is a species of facultative anaerobic Gram-negative bacteria of the family Enterobacteriaceae which currently consists of 13 recognized species. These bacteria have a rod shape with a typical length of 1–5 μm. Most C.
Does Citrobacter freundii have a capsule?
Features associated with isolates of the Citrobacter genus Citrobacter species are 1.0 × 2.0–6.0 μm in size. They are found either singly or in pairs, are devoid of a capsule, and are motile. C. freundii form small, circular, convex dark pink colonies on MacConkey agar.
Is Citrobacter freundii Gram positive or Gram-negative?
rodentium (formerly Citrobacter freundii strain 4280), is a nonmotile, gram-negative rod that ferments lactose but does not utilize citrate or does so marginally (Barthold, 1980; Schauer et al., 1995).
Is Citrobacter freundii coagulase positive or negative?
Biochemical Test and Identification of Citrobacter freundii
| Basic Characteristics | Properties (Citrobacter freundii) |
|---|---|
| Gas from glucose | Positive (+ve) |
| Gelatin Hydrolysis | Negative (-ve) |
| Gram Staining | Negative (-ve) |
| Growth in KCN | Positive (+ve) |
Is Citrobacter freundii a glucose fermenter?
They ferment glucose and other carbohydrates with the production of acid and gas. They are oxidase negative, catalase and methyl red positive, Voges-Proskauer negative, and do not decarboxylate lysine. Taxonomically, the genus Citrobacter is most closely related to Salmonella and Escherichia.
Is Citrobacter freundii antibiotic resistance?
The 46 Citrobacter isolates were tested for susceptibility to 19 antibiotics belonging to 9 antibiotic classes using the disk diffusion method according to CLSI recommendations. The C. freundii isolates had higher antibiotic resistance rate than C.
Is Citrobacter freundii urease positive or negative?
Biochemical Test and Identification of Citrobacter freundii
| Basic Characteristics | Properties (Citrobacter freundii) |
|---|---|
| Pigment | Negative (-ve) |
| Shape | Rods |
| Spore | Negative (-ve) |
| Urease | Variable |
Is Citrobacter Freundii indole positive or negative?
negative
The genus is subdivided into two species: (1) Citrobacter freundii (includes mostly H2S-positive, indole-negative, and adonitol-negative cultures) and (2) Citrobacter diversus (composed of H2S-negative, indole-positive, and adonitol-positive cultures).
What antibiotic treats Citrobacter Freundii?
Carbapenems, cefpirome, amikacin, and quinolones are still reliable agents for treating C. freundii bacteremia. Although most isolates of C.
Is Citrobacter Freundii a facultative anaerobe?
Citrobacter freundii (C. freundii) is a motile, facultative anaerobe, non-sporing gram-negative bacilli colonize in the gastrointestinal tract of humans and other animals. It is also found in water, soil, and food.
