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Campylobacter  growth kinetic parameters can be used to refine the sensitivity and efficiency of microbial growth-based methods. Therefore, the aim of this study was to construct growth curves for  C. jejuni ,  C. coli , and  C. lari  in pure culture and calculate growth kinetics for each  Campylobacter  species in the same environmental conditions.  Campylobacter jejuni ,  C. coli  and  C. lari  were grown over 48 h and inoculated into 15 mL Hungate tubes ( N  = 3 trials per species; 5 biological replicates per trial; 3 species; 1 strain per species). Absorbance measurements were taken in 45 min intervals over 24 h. Optical density readings were plotted versus time to calculate growth kinetic parameters.  C. jejuni  exhibited the longest lag phase ( p  &lt; 0.001) at 15 h 20 min ± 30 min, versus  C. coli  at 11 h 15 min ± 17 min, and  C. lari  at 9 h 27 min ± 15 min. The exponential phase duration was no longer than 5 h for all species, and doubling times were all less than 1h 30 min. The variation in growth kinetics for the three species of  Campylobacter  illustrates the importance of determining individual  Campylobacter  spp. growth responses for optimizing detection based on low bacterial levels. This study provides kinetics and estimates to define enrichment times necessary for low concentration  Campylobacter  detection.

Comparison of optical density-based growth kinetics for pure culture Campylobacter jejuni, coli and lari grown in blood-free Bolton broth