Antimicrobial Activity of Cerium Oxide Nanoparticles on Opportunistic Microorganisms: A Systematic Review

Table 7

Recent studies of antimicrobial activity of CeNP against Streptococcus pneumoniae.

Strain of S. pneumoniae	Concentration; (mg/mL)	Microbiological technique	Result
ni	1.0	Agar diffusion	0.0 mm	[20]
	5.0		3.33 ±0.33 mm
	10.0		10.67 ± 0.33 mm
ni	10	Agar diffusion	0.0 mm	[21]
	50		~3.60 mm
	100		~4.33 mm
ATCC 25923	-	Macrodilution	110 ± 40 µg/mL (planktonic culture); 180 ± 80 µg/mL (biofilm)	[34]

/paper disk; ni: not identified in the paper; in chronological order. Source: original source.