Biochemical Test of Helicobacter pylori

Biochemical Test of Helicobacter pylori

Basic Characteristics Properties (Helicobacter pylori)
Capsule Non-Capsulated
Catalase Positive (+ve)
Flagella Flagellated
Glycine (1%) Tolerance Negative (-ve)
Gram Staining Negative (-ve)
Growth at 25, 30 and 45°C Negative (-ve)
Growth at 35 and 40°C Positive (+ve)
Growth at 0.5 and 0.75 % NaCl Positive (+ve)
Growth at 1.00 and 1.25 % NaCl Positive (+ve)
Growth at 1.5 % NaCl Negative (-ve)
H2S Positive (+ve)
Motility Motile
Nitrate Reduction Negative (-ve)
Oxidase Positive (+ve)
Shape Rods
Spore Non-Sporing
Urease Positive (+ve)

Fermentation of

Glucose Positive (+ve)

Enzymatic Reactions

Alkaline Phosphatase Positive (+ve)
Hippurate Negative (-ve)
Indoxyl Acetate Negative (-ve)


About Author

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Sagar Aryal

Sagar Aryal is a microbiologist and a scientific blogger. He attended St. Xavier’s College, Maitighar, Kathmandu, Nepal, to complete his Master of Science in Microbiology. He worked as a Lecturer at St. Xavier’s College, Maitighar, Kathmandu, Nepal, from Feb 2015 to June 2019. After teaching microbiology for more than four years, he joined the Central Department of Microbiology, Tribhuvan University, to pursue his Ph.D. in collaboration with Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Saarbrucken, Germany. He is interested in research on actinobacteria, myxobacteria, and natural products. He has published more than 15 research articles and book chapters in international journals and well-renowned publishers.

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