Table 1.

Summary of various biogenic metallic NPs with anti-bacterial properties.

Element	Biological source	Used component for synthesis	Size (nm) and shape	Affected Bacterial strains	Ref.
Silver	E. japonica	Leaf extract	46 to 70 spherical	E. coli and S. aureus	[112]
Silver	J. adhatoda L	leaf extract	5-50 spherical	P. aeruginosa	[113]
Silver	A. comosus	Leaf extract	12.4 spherical	S. aureus, S. pneumoniae, P. mirabilis and E. coli	[114]
Silver	M. officinalis	Leaf extract	12 spherical	S. aureus and E. coli	[115]
Silver	Alternaria sp	Fungus	80 spherical	B. subtilis, S. aureus, E. coli and S. marcescens,	[116]
Silver	Penicillium	Fungus	10-100 spherical	B. cereus, S. aureus, E. coli and P. aeruginosa	[117]
Iron	T. procumbens	Plant extract	80-100	P. aeruginosa	[62]
Iron	G. jasminoides and L. inermis	Plant extract	21, hexagonal	E. coli, S. enterica, P. mirabilis and S. aureus	[63]
Gold	T. harzianum	Fungus		E. coli MTCC 1302
Gold	H. Cordata	Plant extract	30-90 spherical	B. subtillis, S. typhimurium, B. cereus and E. coli	[118]
Gold	Streptomyces sp. NH21	Fungus	10 spherical	E. coli, K. pneumoniae, P. mirabilisS. infantis, P. aeruginosa and B. subtilis	[119]
Gold	C. globosum	Fungus	12 spherical	E. coli, ATCC 25922; K. pneumoniae, IMS/GN9; P. mirabilis, IMS/GN13 and S. aureus	[120]
Gold	A. catechu	Plant extract	13.7 spherical	E. coli, K. pneumonia, P. aeruginosa, Enterobacter and S. aureus	[94]
Gold	C. cujete L (Calabash tree)	Plant extract	32.89 spherical	E. Coli (MTCC 1687), P. aeruginosa (MTCC 1688), V. cholerae (MTCC 3906), Salmonella typhi (MTCC 531), S. flexneri (MTCC 9543) and B. subtilis (MTCC 441)	[121]
Gold	A. terreus	Fungus	10-19 spherical	Escherichia coli	[122]
Zinc oxide	E. faecalis	bacteria	16 to 96 spherical	E. Coli, K. pneumonia and S. aureus	[123]
Zinc oxide	R. graveolens	Herb	28 wurtzite	K. aerogenes, P. aeruginosa, E. coli, S. aureus	[86]
Zinc oxide	E. faecalis	bacteria	16 to 96 spherical	E. coli 03, K. Pneumonia 125 S. aureus 20 E. coli MTCC 9537, K. pneumonia MTCC 109, S. aureus MTCC 96, P. AeruginosaMTCC 741, S. flexneri MTCC 1457 and E. faecalis NCIM 5025	[124]
Zinc oxide	C. pictus D. Don	Plant extract	11–25 hexagonal	S. aureus (NCIM 2079), B. subtilis (NCIM 2063) E. coli (NCIM 2065) and S. paratyphi (NCIM 2501)	[125]
Zinc oxide	C. halicacabum	Plant extract	30-80 spherical & rod	E coli and S. aureus	[126]