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Table. 4.

Table. 4.

Minimum inhibitory concentrations (MICs) of antibiotics for strain Q180 and Lp. plantarum ATCC 14917T.

Antibiotic MIC (mg/l)

Strain Q180 Strain ATCC 14917T Cut-off value

E-test strip Broth assay E-test strip Broth assay
Ampicillin 1.0±0.0 0.25±0.0 0.38±0.0 0.5±0.0 2.0
Gentamicin 1.5±0.0 8.0±0.0 1.0±0.0 8.0±0.0 16.0
Kanamycin 24.0±0.0 64.0±0.0 24.0±0.0 64.0±0.0 64.0
Erythromycin 0.25±0.0 0.4±0.1 0.25±0.0 1.0±0.0 1.0
Clindamycin 0.25±0.0 0.125±0.0 0.19±0.0 0.125±0.0 2.0
Tetracycline 32.0±0.0 32.0±0.0 24.0±0.0 32.0±0.0 32.0
Chloramphenicol 8.0±0.0 8.0±0.0 6.0±0.0 8.0±0.0 8.0

The assay was performed using the standard broth microdilution susceptibility assay protocol recommended by the National Committee for Clinical Laboratory Standards [43].

Microbiological cut-off values for antibiotics for Lp. plantarum, as provided by the EFSA 2012 guideline.

J. Microbiol. Biotechnol. 2021;31:1420~1429 https://doi.org/10.4014/jmb.2106.06066
© J. Microbiol. Biotechnol.