Evaluation of Combination Effects of Ethanolic Extract of Ziziphus mucronata Willd. subsp. mucronata Willd. and Antibiotics against Clinically Important Bacteria

Table 2

Susceptibility of the bacterial isolates to Ziziphus mucronata extract and the antibiotic.

	Minimum Inhibitory concentrations of extracts and the different antibiotics used in combination
	ZME	Chloramphenicol	Amoxicillin	Tetracycline	Ciprofloxacin	Nalidixic acid	Kanamycin
	(mg/mL)	(µg/mL)
E. coli ATCC 8739	0.156	15.63 (I)	15.63 (S)	0.977 (S)	0.0048 (S)	3.906 (S)	31.25 (I)
B. cereus ATCC 10702	0.156	3.91 (S)	7.813 (S)	0.0305 (S)	0.0781 (S)	15.63 (I)	125 (R)
B. subtilis KZN	0.313	3.91 (S)	62.5 (R)	0.977 (S)	0.0195 (S)	7.813 (S)	3.906 (S)
P. aeruginosa ATCC 19582	0.313	3.91 (S)	3.906 (S)	0.488 (S)	0.156 (S)	7.813 (S)	31.25 (I)
S. marcescens ATCC 9986	0.625	0.98 (S)	31.25 (I)	1.563 (S)	0.0781 (S)	1.953 (S)	1.953 (S)
A. calcoaceticus anitratus	0.313	7.81 (S)	250 (R)	0.49 (S)	0.0195 (S)	31.25 (S)	15.63 (S)
K. pneumoniae ATCC 10031	0.156	1.95 (S)	0.977 (S)	0.488 (S)	0.039 (S)	3.906 (S)	15.63 (S)
P. vulgaris ATCC 6830	0.313	7.81 (S)	250 (R)	7.813 (I)	0.0195 (S)	1.953 (S)	31.25 (I)
E. faecalis ATCC 29212	0.313	1.95 (S)	3.906 (S)	3.906 (S)	0.313 (S)	31.25 (I)	125.00 (R)
S. aureus OK2a	0.156	7.81 (S)	125 (R)	0.977 (S)	0.0781 (S)	31.25 (I)	7.813 (S)
S. aureus OK2b	0.313	7.81 (S)	7.813 (S)	0.197 (S)	0.0195 (S)	62.50 (R)	31.25 (I)
S. flexneri KZN	0.313	7.813 (S)	250 (R)	0.197 (S)	0.039 (S)	250 (R)	15.625 (S)