Phytosynthesis, characterization, antibacterial and cytotoxic effects of copper nanoparticles

Figures & data

Figure 1. (a) Copper sulfate solution, (b) F. macrocolea flowers extract, (c) CuNPs colloidal suspension.

Figure 2. UV-Vis spectra of CuNPs synthesized by F. macrocolea flowers extract (a) Aqueous suspension, (b) Liquid ammonia suspension.

Figure 3. (a) FT-IR spectrum of F. macrocolea flowers aqueous extract. (b) FT-IR spectrum of the synthesized CuNPs.

Figure 4. SEM image of the CuNPs.

Figure 5. EDX image of the CuNPs.

Figure 6. XRF image of the CuNPs.

Figure 7. XRD pattern of the CuNPs.

Figure 8. Antibacterial effect of the CuNPs against bacteria, (a) S. aureus, (b) B. cereus, (c) E. coli and (d) K. pneumonia.

Table 1. Antibacterial activity of synthesized CuNPs.

Bacteria	Zone of inhibition (mm)				MIC (μg/mL)
	Concentration(μg/mL)
	100	250	500	1000
S. aureus	10	14	19	23	31.25
B. cereus	9	14	17	20	62.5
E. coli	8	10	11	18	125
K. pneumonia	8	10	14	18	125

Table 2. Percent viability of cells exposed to the CuNPs.

Compound	Concentration (µg/mL)	Cell viability (%)
Copper nanoparticles	10	100
	25	100
	50	88
	100	83