Screening of Lactobacillus spp. for the prevention of Pseudomonas aeruginosa pulmonary infections

BMC Microbiology

Table 2 In vitro effects of pH, lactic and acetic acids on Pseudomonas aeruginosa PAO1 growth

Acid concentrations (mM)	OD_595nmof *P. aeruginosa* at different pH and acid concentrations*
Lactic acid	pH 7	pH 6	pH 5	pH 4
0	0.60 ± 0.03	0.62 ± 0.01	0.43 ± 0.02	0.01 ± 0.00
50	0.74 ± 0.06	0.81 ± 0.11	0.47 ± 0.19	0.12 ± 0.01
100	0.65 ± 0.02	0.65 ± 0.02	0.23 ± 0.07	0.12 ± 0.01
Acetic acid	pH 7	pH 6	pH 5	pH 4
0	0.60 ± 0.03	0.62 ± 0.01	0.43 ± 0.02	0.01 ± 0.00
12.5	0.70 ± 0.06	0.58 ± 0.02	0.38 ± 0.27	0.12 ± 0.01
25	0.63 ± 0.06	0.65 ± 0.09	0.11 ± 0.01	0.12 ± 0.00
50	0.56 ± 0.02	0.26 ± 0.07	0.11 ± 0.01	0.12 ± 0.01
100	0.77 ± 0.14	0.10 ± 0.01	0.11 ± 0.01	0.13 ± 0.01

* Each value is the mean of triplicates ± SD (ANCOVA), P. aeruginosa was incubated in BHI medium for 22 h in presence of different acid concentrations (acetic, lactic acid or HCl).

ISSN: 1471-2180