Khat (Catha edulis) Leaf Extract-Based Zinc Oxide Nanoparticles and Evaluation of Their Antibacterial Activity

Table 2

Zone of inhibition of ZnO NPs against different human pathogenic bacterial strains.

Reagent	E. coli inhibition zone (mm)	S. typhi inhibition zone (mm)	S. aureus inhibition zone (mm)	S. pneumoniae inhibition zone (mm)
Gentamycin	27	23	22	21
Chloramphenicol	22	18	18	17
[3]	13	—	16	10
[51]	19.8	—	10.7	—
ZnO NPs	23	17	17	15