Figure 8. Antibacterial evaluation of Plant derived ZnONPs and extract (A-WPE) and Callus derived (B-CE) ZnONPs and extract analysed by disc diffusion method, showing zone of inhibition against two Gram-positive (Staphylococcus epidermidis, Bacillus subtilis) and two Gram-negative bacteria (Klebsiella pneumoniae, Pseudomonas aeruginosa). Zone of inhibition were measured in mm, taking sample concentration 10 mg/mL. Notes: Values (mean ± SD) indicates of three experiments.

Abbreviations: Abs, amoxicillin antibiotic; WPE, whole plant extract; W-ZnONPs, whole plant derived zinc oxide nanoparticles; CE, callus extract; C-ZnONPs, callus derived ZnONPs; Zn acetate, zinc acetate dihydrate salt; SD, standard deviation