Comparative Study on the Synergistic Action of Differentially Synthesized Silver Nanoparticles with β-Cephem Antibiotics and Chloramphenicol

Table 3

Synergistic activity of chloramphenicol against different pathogens.

Microorganisms	Chloramphenicol; zone (mm)	Ag NPs + chloramphenicol
		Ag NPs (AS); 30 µg/disc	Fold increase (%)	Ag NPs (CS); 20 µg/disc	Fold increase (%)
Escherichia coli	28	36	28.5	30	7.1
Pseudomonas aeruginosa	25	29	16	27	8
Staphylococcus aureus	28	29	3.57	31	10.7
Lactococcus lactis	20	24	20	21	5
Micrococcus luteus	28	31	10.7	29	3.5
Bacillus subtilis	16	20	25	20	25
Proteus vulgaris	30	31	3.33	32	6.6
Klebsiella pneumoniae	15	7	−53.3	13	−13.3
Salmonella typhi	25	25	0	26	4
Proteus mirabilis	21	21	0	22	4.7