Research Article

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

Table 2

Synergistic activity of cephalothin against different pathogens.

Microorganisms Cephalothin
zone (mm)
Ag NPs + cephalothin
Ag NPs (AS)
30 µg/disc
Fold increase (%)Ag NPs (CS)
20 µg/disc
Fold increase (%)

Escherichia coli 0 000 0
Pseudomonas aeruginosa 1410 −28.5 15 7.1
Staphylococcus aureus 1112 9 10 −9
Lactococcus lactis 1211 −8.3 12 0
Micrococcus luteus 1113 18.18 10−9
Bacillus subtilis 1013 30 1330
Proteus vulgaris 3422 −35.2 24−29.4
Klebsiella pneumoniae 00 0 00
Salmonella typhi 1313 0 147.6
Proteus mirabilis 3436 5.8 352.9