Online Microbiology and Biology Study Notes
Biochemical Test of Bacteria Notes. Notes on Biochemical Test of Bacteria. Online Biochemical Test of Bacteria related notes. Biochemical Test of Bacteria Notes for students.
Biochemical reactions are very important in the identification of bacterial isolates and in the identification of different bacterial species. These tests depend on the presence of certain enzymes, such as catalase, oxidase, urease, gelatinase, etc., produced by the bacteria. Different bacteria produce varying spectra of enzymes. For example, some enzymes are necessary for the bacterium’s individual metabolism, and some facilitate …
Image Source: Microbe-Canvas Some of the characteristics are as follows: Basic Characteristics Properties (Fusobacterium necrophorum) Bile Growth Variable Capsule Negative (-ve) Catalase Negative (-ve) Flagella Negative (-ve) Gas Positive (+ve) Gelatin Hydrolysis Variable Gram Staining Gram-negative bacteria H2S Positive (+ve) Hemolysis Positive (+ve) (alpha- and beta-hemolysis may be observed) Indole Positive (+ve) Methylene Blue Reduction Positive (+ve) Motility Negative (-ve) …
Image Source: Wikipedia Some of the characteristics are as follows: Basic Characteristics Properties (Aeromonas hydrophila) Capsule -ve Catalase +ve Citrate +ve Flagella +ve Gas +ve Gelatin Hydrolysis +ve Gram Staining Gram-negative H2S +ve Hemolysis +ve Indole +ve Maximum Growth Temperature 41°C Motility +ve Nitrate Reduction +ve OF (Oxidative-Fermentative) Fermentative Oxidase +ve Oxygen Requirement Facultative Anaerobe Shape Rod Spore -ve String …
Some of the characteristics are as follows: Basic Characteristics Properties (Haemophilus aegyptius) Capsule Negative (-ve) Catalase Positive (+ve) Gas Negative (-ve) Gram Staining .Gram-negative H2S Negative (-ve) Hemolysis Negative (-ve) Indole Negative (-ve) Motility Negative (-ve) Nitrate Reduction Positive (+ve) Nitrite Reduction Negative (-ve) Oxidase Positive (+ve) Shape Long slender rods Urease Positive (+ve) V-factor requirement Positive (+ve) Fermentation of …
a: Burkholderia cepacia ATCC (Image Source: ATCC) b: Burkholderia cepacia (Image Source: Rapid Microbiology) c: Burkholderia cepacia (Image Source: OMICS International) d: Burkholderia cepacia complex from respiratory secretions of patients with cystic fibrosis (Image Source: Thermo Scientific) e: Scanning Electron Micrograph of Burkholderia cepacia (Image Source: Wikipedia) f: Burkholderia cepacia gram stain (Image Source: DOI: 10.1099/jmmcr.0.005081) Some of the characteristics …
Image: Granuloma inguinale (donovanosis) in a conventional Pap test. A: Granulomatous inflammation is shown with epithelioid histiocytes and lymphocytes. B: The organisms (Donovan bodies) can be seen in thin-walled intracytoplasmic vacuoles (circle ). (Pap stain, Mag ×200 in a and ×400 in b). C: Macrophages show numerous safety pin-shaped structures with polar thickening of chromatin (Donovan bodies) and a halo …
Some of the characteristics are as follows: Basic Characteristics Properties (Haemophilus parainfluenzae) Capsule Variable Catalase Variable Gas Variable Gram Staining Gram-negative (-ve) H2S Positive (+ve) Hemolysis Negative (-ve) Indole Variable Motility Negative (-ve) Nitrate Reduction Positive (+ve) Nitrite Reduction Positive (+ve) Oxidase Positive (+ve) Shape Small, pleomorphic rods, usually with long, filamentous forms. Urease Variable V-factor requirement Positive (+ve) Fermentation …
Image Source: New York State Health Department Some of the characteristics are as follows: Basic Characteristics Properties (Francisella tularensis subsp. tularensis) Capsule Positive (+ve) Catalase Positive (+ve) Flagella Negative (-ve) Gas Negative (-ve) Gelatin Hydrolysis Negative (-ve) Gram Staining Faintly stained Gram-negative H2S (in cysteine-supplemented medium) Positive (+ve) Indole Negative (-ve) Motility Negative (-ve) Nitrate Reduction Negative (-ve) NH3 produced …
Read moreBiochemical Test of Francisella tularensis subsp. tularensis
Some of the characteristics are as follows: Basic Characteristics Properties (Kingella kingae) 10% Bile Negative (-ve) Capsule Positive (+ve) Catalase Negative (-ve) Citrate Negative (-ve) Coagulase Negative (-ve) Gas Negative (-ve) Gelatin Hydrolysis Negative (-ve) Gram Staining Gram-negative H2S Variable Hemolysis Positive (+ve) Indole Negative (-ve) Motility Negative (-ve) 6% NaCl Negative (-ve) Nitrate Reduction Negative (-ve) Nitrite Reduction Negative …
Some of the characteristics are as follows: Basic Characteristics Properties (Bordetella pertussis) Capsule Positive (+ve) Catalase Positive (+ve) Citrate Negative (-ve) Flagella Negative (-ve) Gelatin Hydrolysis Negative (-ve) Gram Staining Gram-negative (-ve) Growth in nutrient broth Negative (-ve) Hemolysis Positive (+ve) Motility Negative (-ve) Nitrate Reduction Negative (-ve) Oxidase Positive(+ve) Pigment Negative (-ve) Shape Minute coccobacilli Spore Negative (-ve) Urease …