Susceptibilities of C. jejuni 11168 and its efflux mutants to the selected plant extracts in the presence or absence of PAβN (20 µg/mL)a, NMP (100 µg/mL) a, verapamil (100 µg/mL), reserpine (100 µg/mL) or CCCP (0.25µg/mL)b.
“Fold diff.” indicates fold difference, which is calculated using the formula: MIC without an EPI/MIC with an EPI. ≥4-fold changes are indicated in bold.a
PAβN and NMP significantly (p<0.05) reduced the MICs of the plant extracts in 11168, 11168F and 11168R, but not in 11168B (p > 0.05).b
The effect of CCCP on the MICs of the plant extracts was only significant with 11168 (p<0.05).