Table 1.

The comparison of the log reduction after cold atmospheric plasma (CAP) exposures from 5 to 60 min, a 15-min vitamin C treatment, 15 min di-H₂O + 5 min CAP, and a combined treatment of vitamin C for 15 min followed by a 5-min CAP.

Bacterium	15-min vitamin C#	15 min di-H2O + 5 min CAP#	CAP + VC#	5-min CAP&	15-min CAP&	30-min CAP&	60-min CAP&
B. subtilis	1.0	1.9	2.1	2.0	2.0	2.3	x
S. epidermidis	0.3	0.2	0.8	0.1	0.6	0.8	0.8
E. coli	0.8	1.0	1.7	1.0	1.1	0.9	0.9
P. aeruginosa	0.4	0.3	1.5	0.4α	0.6	0.6	2.5

B. subtilis was not treated for 60 min.

^#Data were obtained in compared to 15 min di-H2O exposed control (from Figure 4).

^&Data were obtained in compared to general control (from Figure 1).

^αP. aeruginosa was enhanced by 0.4 log.