Antibacterial behaviour of Vitex negundo extract assisted ZnO nanoparticles against pathogenic bacteria.

•ZnO NPs originally synthesized by using Vitex negundo plant extract.•This is an eco-friendly synthesis at short time duration and without complicated procedures.•Polyphenolic compounds of Vitex negundo extract used as a hydrolytic agent.•Antibacterial activity of ZnO NPs was significant against bacterial pathogens.