Online Microbiology and Biology Study Notes
Biochemical Test of Bacteria 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 …
Biochemical Test of Brucella melitensis Basic Characteristics Properties (B. melitensis) Capsule Negative (-ve) Catalase Positive(+ve) Flagella Negative (-ve) Gelatin Hydrolysis Negative (-ve) Gram Staining Gram Negative (-ve) H2S Negative (-ve) Hemolysis Negative (-ve) Indole Negative (-ve) Litmus Milk Negative (-ve) Motility Negative (-ve) MR (Methyl Red) Negative (-ve) Nitrate Reduction Positive(+ve) Oxidase Positive(+ve) Shape Coccobacilli, or short rods Spore Negative …