Biocheminsider

By Prof Walter Jaoko Salmonella Typhi is the bacterium responsible for causing typhoid fever. There are various Biochemical tests that are commonly used in clinical laboratories to identify and confirm the presence of Salmonella Typhi in patient samples. These tests help differentiate Salmonella Typhi from other bacteria and assist in the diagnosis of typhoid fever. … Read more

Klebsiella oxytoca is a bacterium that belongs to the Klebsiella genus, which is known for its pathogenic potential and association with various infections in humans. To identify and characterize Klebsiella oxytoca in a clinical or laboratory setting, biochemical tests are commonly employed. Biochemical tests used for the identification of Klebsiella oxytoca Basic Characteristics Properties ( Klebsiella … Read more

Basic Characteristics Properties (Pseudomonas aeruginosa) Capsule Non-Capsulated Catalase Positive (+ve) Cetrimide Test Positive (+ve) Citrate Positive (+ve) Coagulase Negative (-ve) Flagella Flagellated (Single) Gas Negative (-ve) Gelatin Hydrolysis Positive (+ve) Gram Staining Negative (-ve) H2S Negative (-ve) Hemolysis Beta Hemolytic Indole Negative (-ve) Motility Motile (Unipolar) MR (Methyl Red) Negative (-ve) Nitrate Reduction Positive (+ve) … Read more

Basic Characteristics Properties (Staphylococcus aureus) Capsule Non-Capsulated Catalase Positive (+ve) Citrate Positive (+ve) Coagulase Positive (+ve) Gas Negative (-ve) Gelatin Hydrolysis Positive (+ve) Gram Staining Positive (+ve) H2S Negative (-ve) Hemolysis Positive (+ve)- Beta Indole Negative (-ve) Motility Negative (-ve) MR (Methyl Red) Positive (+ve) Nitrate Reduction Positive (+ve) OF (Oxidative-Fermentative) Fermentative Oxidase Negative (-ve) Pigment … Read more

Basic Characteristics Properties of Lactobacillus spp.) Capsule Negative (-ve) Catalase Negative (-ve) Citrate Negative (-ve) Flagella If present, peritrichous Gas Negative (-ve) Gelatin Hydrolysis Negative (-ve) Gram Staining Gram positive H2S Negative (-ve) Indole Negative (-ve) Motility Mostly Negative (-ve) MR (Methyl Red) Negative (-ve) Nitrate Reduction Negative (-ve) Oxidase Negative (-ve) Pigment Rare; if present, … Read more

Basic Characteristics Properties (Enterobacter cloacae) Capsule Negative (-ve) Catalase Positive (+ve) Citrate Positive (+ve) Flagella Positive (+ve) Gas from glucose Positive (+ve) Gelatin Hydrolysis Negative (-ve) Gram Staining Negative (-ve) Growth in KCN Positive (+ve) H2S Negative (-ve) Indole Negative (-ve) Motility Motile MR (Methyl Red) Negative (-ve) Nitrate Reduction Positive (+ve) OF (Oxidative-Fermentative) Facultative Anaerobes … Read more

Basic Characteristics Properties (Vibrio cholerae) Capsule Non-Capsulated Citrate +ve Flagella Flagellated Gas -ve Gelatin Hydrolysis +ve Gram Staining -ve H2S -ve Hemolysis Beta Hemolysis Indole +ve Motility Motile MR (Methyl Red) -ve Nitrate Reduction +ve Oxidase +ve Shape Rods Spore Non-Sporing String Test +ve Urease -ve VP (Voges Proskauer) Variable Fermentation of Adonitol -ve Arabinose … Read more

Basic Characteristics Properties (Clostridium tetani) Capsule Negative (-ve) Catalase Negative (-ve) Flagella Peritrichous Gas Positive (+ve) Gelatin Hydrolysis Positive (+ve) Gram Staining Gram-stain-positive, but become Gram-stain-negative after approximately 24 h incubation. Growth in 20% Bile Negative (-ve) Growth in 6.5% NaCl Negative (-ve) H2S Positive (+ve) Hemolysis Positive (+ve) Indole Variable Motility Positive (+ve) Nitrate … Read more