TABLE 2.

Green synthesis of different metal and metal oxide NPs, using five different medicinal plant extracts and different established methods of nanonization, having antibacterial potential on different bacteria.

Name of the plant	Method of nanonization	Precursor metallic solution	Nanoformulation	Antibacterial action on	References
Tulsi	Phytoreduction	AgNO3	AgNPs	E. coli, S. aureus, K. pneumoniae, B. linens, P. acnes, B. cereus, S. epidermidis	Ramteke et al., 2013; Durán et al., 2016; Ramkumar et al., 2017; Khorrami et al., 2018; Jacob et al., 2019; Yin et al., 2020
Turmeric	Phytoreduction	AgNO3 CuSO4	AgNPs CuNPs	E. coli O157:H7, L. monocytogenes, B. subtilis, P. aeruginosa, S. aureus	Nayak et al., 2017; Alsammarraie et al., 2018; Maghimaa and Alharbi, 2020; Varghese et al., 2020
Aloe vera	Phytoreduction	AgNO3 CuSO4 FeCl3 ZnSO4	AgNPs CuONPs FeNPs ZnONPs	E. coli, P. aeruginosa, B. subtilis, K. pneumoniae, S. typhi, K. varians, A. hydrophila, P. fluorescens, F. branchiophilum, P. mirabilis, S. flexneri	Xia et al., 2008; Vijay Kumar et al., 2015; Ali et al., 2016; Yadav and Kumar, 2016; Velez et al., 2018
Oregano	Hot hydrothermal method PEG stabilization	AgNO3 HAuCl4	AgNPs AuNPs	P. aeruginosa S. aureus S. enteritidis	Bhargava et al., 2015; Mith et al., 2015; Moraes-Lovison et al., 2017; Benedec et al., 2018; Lee et al., 2019; Meretoudi et al., 2021
Eucalyptus	Phytoreduction	AgNO3 CuSO4 NiNO3⋅6H2O	AgNPs CuONPs NiONPs	P. aeruginosa, E. coli, S. aureus, B. subtilis	Sulaiman et al., 2013; Saleem et al., 2017; Ali et al., 2019; Wintachai et al., 2019