Biochemical Test of Campylobacter jejuni

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Biochemical Test of Campylobacter jejuni

Basic Characteristics Properties (Campylobacter jejuni)
Capsule Capsulated
Catalase Positive (+ve)
Flagella Flagellated
Gram Staining Negative (-ve)
Growth at 25°C Negative (-ve)
Growth at 37°C Positive (+ve)
Growth at 42°C Positive (+ve)
Growth on MacConkey Agar Positive (+ve)
H2S Negative (-ve)
Hemolysis Non-Hemolytic
KOH Positive (+ve)
Motility Motile
Nitrate Reduction Positive (+ve)
Nitrite Reduction Negative (-ve)
OF (Oxidative-Fermentative) Non-Fermentative
Oxidase Positive (+ve)
Resistance to cephalothin Positive (+ve)
Resistance to nalidixic acid Negative (-ve)
Shape Comma/S-Shaped/Coccoid/Rods
Spore Non-Sporing
Urease Negative (-ve)

Fermentation of

DNase Negative (-ve)
Glucose Negative (-ve)

Enzymatic Reactions (Hydrolysis)

Alkaline Phosphatase Variable
Arylsulphatase Negative (-ve)
Hippurate Positive (+ve)
Indoxyl Acetate Positive (+ve)
Tween 40 Positive (+ve)
Tween 60 Positive (+ve)
Tween 80 Negative (-ve)

Scanning electron micrograph of the spiral shape and flagella of Campylobacter jejuni

Figure: Scanning electron micrograph of the spiral shape and flagella of Campylobacter jejuni

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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