Table 2: Antimicrobial activity (as inhibition zone diameters) of PGPE and ampicillin (APCL) against 16 strains of Salmonella.

StrainSerotypesDiameter of clear zone (mm)
PGPEAPCLa
100 μg200 μg500 μg10 μg

JOL 380S. typhi ATCC 1994313.3 ± 1.116.3 ± 1.517.3 ± 1.134.2 ± 1.0
JOL 381S. paratyphi A14.3 ± 0.515.6 ± 1.118.6 ± 1.128.5 ± 1.1
JOL 386S. enteritidis9.0 ± 1.012.6 ± 1.514.3 ± 1.131.1 ± 0.3
JOL 387S. typhimurium9.6 ± 0.511.6 ± 0.514.6 ± 0.527.5 ± 1.0
JOL 388S. typhimurium11.0 ± 1.014.0 ± 1.015.0 ± 1.026.0 ± 1.0
JOL 389S. typhimurium9.0 ± 1.012.0 ± 1.012.6 ± 0.5ND
JOL 407S. enteritidis9.3 ± 1.112.3 ± 0.514.6 ± 0.526.7 ± 1.2
JOL 408S. typhimurium8.6 ± 1.110.6 ± 0.514.0 ± 2.030.2 ± 0.5
JOL 409S. dublin ATCC 391848.0 ± 0.010.0 ± 0.013.3 ± 0.527.0 ± 1.1
JOL 410S. derby ATCC 696010.0 ± 0.012.0 ± 0.014.3 ± 0.525.6 ± 1.1
JOL 411S. choleraesuis ATCC 700111.6 ± 0.515.6 ± 1.016.0 ± 0.011.2 ± 1.0
JOL 419S. gallinarum12.3 ± 0.516.0 ± 1.016.6 ± 1.127.3 ± 1.5
JOL 420S. gallinarum16.0 ± 0.016.0 ± 0.717.6 ± 0.525.8 ± 1.1
JOL 421S. gallinarum11.3 ± 0.515.0 ± 0.016.3 ± 0.525.2 ± 0.3
JOL 422S. gallinarum12.0 ± 0.014.0 ± 1.716.0 ± 1.028.5 ± 0.5
JOL 423S. gallinarum ATCC 91847.6 ± 0.510.0 ± 0.013.3 ± 1.1ND

Data shown represent the mean ± SE of three experiments that consisted of three replicates. ND, No activity detected.
aPositive control.