Table 1.

Zones of inhibition (in diameter) shown by different bacteria.

Sample	Bacteria	Concentration (mg/ml)	Zone of inhibition Diameter (mm)
CuO/C nanocomposites	E. coli	Streptomycin (1mg)	23
		0.25	Nil
		0.5	Nil
		1.0	11
	Pseudomonas aeruginosa	Streptomycin (1mg)	28
		0.25	Nil
		0.5	Nil
		1.0	12
	Klebsiella pneumoniae	Streptomycin (1mg)	20
		0.25	Nil
		0.5	Nil
		1.0	14
	Staphylococcus aureus	Streptomycin (1mg)	30
		0.25	Nil
		0.5	Nil
		1.0	11
	Streptococcus mutans	Streptomycin (1mg)	22
		0.25	Nil
		0.5	Nil
		1.0	Nil