Table 2. Spectrum of Antimicrobial Activity of the Cu_xAg_xZn_1–2xO (x = 0.1) Nanocomposite against the Gram-Positive and Gram-Negative Bacterial Strains^a.

SI no.	bacterial strains	strain’s properties	growth condition	CAZ nanocomposite (10 μg/mL)	antibiotics streptomycin (50 μg/mL)	activity index
1	B. cereus (Gram-positive)	pathogen of food-borne illnesses	TSB, 37 °C	15.0 ± 0.46	19.0 ± 0.70	0.789
2	E. coli (Gram-negative)	GP, colicin indicator strain	TSB, 37 °C	15.5 ± 0.38	20.0 ± 0.76	1.333
3	E. faecalis(Gram-positive)	gastrointestinal, causing abdominal infections	NB, 37 °C	14.6 ± 0.41	18.5 ± 0.61	0.789
4	S. aureus (Gram-positive)	pathogenic, antibiotic-sensitive strain	TSB, 37 °C	13.0 ± 0.49	20.0 ± 0.76	0.65
5	S. epidermidis (Gram-positive)	air-borne skin-infecting pathogen	TSB, 37 °C	15.0 ± 0.45	19.0 ± 0.69	0.789
6	S. mutans (Gram-positive)	dental caries pathogen	BHI, 37 °C	13.4 ± 0.37	19.5 ± 0.70	0.687
7	S. enterica serovar typhimurium (Gram-negative)	gastroenteritis pathogenic prototrophic strain	TSB, 37 °C	16.0 ± 0.28	20.0 ± 0.76	0.80

^aThe values indicate the diameter of inhibition zone (mm).