Table 1.

Antibacterial activities of nanocomposites (diameter of inhibition zone [mm])

Pathogenic strains	Zone of inhibition
	Fe3O4@PEG–Ag	Fe3O4@PEG	Tetracycline	Fe3O4
E. coli	27 ± 0.2	2.5 ± 0.2	29 ± 0.5	10 ± 0.7
S. aureus	30 ± 0.2	9 ± 0.9	33.5 ± 0.3	11 ± 0.2

Note: Values are expressed as mean ± SD.

Abbreviations: PEG, poly(ethylene glycol); E. coli, Escherichia coli; S. aureus, Staphylococcus aureus.