Biochemical Test of Helicobacter pylori

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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 is doing his Ph.D. at the Central Department of Microbiology, Tribhuvan University, Kathmandu, Nepal. He was awarded the DAAD Research Grant to conduct part of his Ph.D. research work for two years (2019-2021) at Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Saarbrucken, Germany. Sagar is interested in research on actinobacteria, myxobacteria, and natural products. He is the Research Head of the Department of Natural Products, Kathmandu Research Institute for Biological Sciences (KRIBS), Lalitpur, Nepal. Sagar has more than ten years of experience in blogging, content writing, and SEO. Sagar was awarded the SfAM Communications Award 2015: Professional Communicator Category from the Society for Applied Microbiology (Now: Applied Microbiology International), Cambridge, United Kingdom (UK). Sagar is also the ASM Young Ambassador to Nepal for the American Society for Microbiology since 2023 onwards.

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