Antimicrobial effect of silver zinc oxide (Ag-ZnO) nanocomposite particles

Figures & data

Figure 1. (a) SEM image of silver zinc oxide nanocomposite (Ag-ZnO NC); (b) spherical sized Ag-ZnO NC (∼0.5 μm).

Figure 2. Comparative analysis of the antimicrobial/killing effect of Ag-ZnO NC on E. coli and B. thuriengensis showing zone of inhibition. 2a-c - Zone of inhibition on E. coli. 2d - Zone of inhibition on B. thuriengiensis.

Table 1.  Effect of Ag-ZnO NC on different test organisms.

	Zone inhibition diameter (mm) [mean ± SD]
Dose (μg)	E. coli	P. aeruginosa	B. thuringiensis
10	5.00±0.23	—	6.00±0.12
20		—	8.00±0.12
50		—	7.00±0.24
100		—	6.00±0.33
200		6.00±0.01	9.00±0.50

Figure 3. Graphical representation of MIC assay in terms of CFU ml^-1 of E. coli in different doses of Ag-ZnO-NC.

Figure 4. Growth curve showing effect of 100 μg of AgZnO-NC on E. coli at 0.5 h interval.

Figure 5. SEM images of control and treated cells of E. coli; (a) Elongated rod-shaped E. coli (control) of ∼10 μm; (b) Elongated E. coli (10.5–12.0 μm) after treatment (50 μg); (c,d) Treated E. coli cells adherred with Ag-ZnO NC.