Preparation of Silver-Doped Alumina Spherical Beads with Antimicrobial Properties

Table 4

Antimicrobial activity of AgP-AS.

Strains	10^8 CFU/mL
	0 mV		39 mV		69 mV
	24 h	48 h	24 h	48 h	24 h	48 h
S. mutans	2.0 ± 0.1	2.0 ± 0.1	1.7 ± 0.1	1.9 ± 2.6^†	1.9 ± 2.6	2.0 ± 2.6
S. aureus	8.2 ± 0.0	7.5 ± 0.1^†	4.9 ± 0.2	4.0 ± 0.2^∗†	5.0 ± 0.4	4.2 ± 0.3^†
K. pneumoniae	10.2 ± 0.1	10.6 ± 0.1	10.2 ± 2.0	11.8 ± 2.3	11.1 ± 1.7	12.1 ± 1.7
E. coli	3.4 ± 0.1	4.6 ± 0.0^†	0.7 ± 0.3	3.4 ± 3.8^†	0.9 ± 0.8	1.4 ± 0.8^†

All values are expressed in average and standard deviation in colony-forming units per milliliter (CFU/mL). Statistical differences with the 0 mV group using similar times. ^†Statistical differences for each AgP-AS sample according to the time ().