Biochemical Test of Bacteria

Biochemical Test of Bacteria

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 …

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Brilliant Green Agar

Brilliant Green Agar

Brilliant Green Agar Brilliant Green Agar medium is recommended as a primary plating medium for isolation of Salmonella species. It was first described as a selective isolation medium for Salmonella species by Kristensen et al. Kauffmann modified their formula to give a highly selective plating medium for the isolation and identification of salmonellae from feces and other pathological material, and from food and dairy …

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Biochemical Test of Salmonella Typhi

Biochemical Test of Salmonella Typhi

Biochemical Test of Salmonella Typhi Characteristics Salmonella Typhi Capsule Negative (-ve) Catalase Positive (+ve) Citrate Negative (-ve) Flagella Positive (+ve) Gas Negative (-ve) Gelatin Hydrolysis Negative (-ve) Gram Staining Negative (-ve) Growth in KCN Negative (-ve) H2S Positive (+ve) Indole Negative (-ve) Motility Positive (+ve) MR (Methyl Red) Positive (+ve) MUG Test Negative (-ve) Nitrate Reduction Positive (+ve) Oxidase Negative (-ve) …

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