Keywords
mineral water
M-PA-C agar and Cetrimide agar
How to Cite
Abstract
This study evaluated the efficacy of two selective media, M-PA-C agar and Cetrimide agar, for isolating P. aeruginosa cells at different incubation temperatures. P. aeruginosa recovery rates, as well as the selectivity of both media were compared. A random effects Bayesian model for binary data was used for performing statistical analysis, and a Poisson Bayesian model was applied to compare the potential of both media selectivity and P. aeruginosa recovery. A discernible difference on the media selectivity was evidenced, and M-PA-C medium presented a higher mean counting rate. P. aeruginosa recovery was similar in both media, and no significant difference was noted in three counts on M-PA-C at 42°C (208 CFU) , and on Cetrimide Agar at 35°C (231 CFU), at 10-6 dilution. With regards to analyzed mineral water samples, no evidence of distinct occurrence rates of P. aeruginosa on either media, at different temperatures, was noted.References
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