Antimicrobial Activity of Xoconostle Pears (Opuntia matudae) against Escherichia coli O157:H7 in Laboratory Medium

Table 1

Final population of E. coli O157:H7 strains in BHI broth in the presence of xoconostle extract at different concentrations % (v/v) after 8 h of incubations at 37^°C. Data represent the average of three replicates with standard error.

xoconostle extract Concentration % (v/v)	Final population (Log CFU/mL) of E. coli O157:H7 strains
	H1730	944	F4546	43895
0 (control)	9.19^aA ± 0.16	8.66^aA ± 0.12	9.12^aA ± 0.20	9.31^aA ± 0.13
4	8.09^bA ± 0.09	7.92^bA ± 0.14	8.08^bA ± 0.17	8.25^bA ± 0.15
6	6.79^cA ± 0.19	6.75^cA ± 0.14	6.78^cA ± 0.17	7.04^cA ± 0.15
8	5.32^dA ± 0.15	5.16^dA ± 0.18	5.32^dA ± 0.11	5.90^dA ± 0.14
10	3.08^eA ± 0.16	2.98^eA ± 0.16	3.07^eA ± 0.12	4.02^eB ± 0.09

^∗Averages with different lower case letters in the same column are significantly different (𝑃<0.05).
^∗Averages with different upper case letters in the same row are significantly different (𝑃<0.05).