. 2015 Jul 16;6:733. doi: 10.3389/fmicb.2015.00733

Table 2.

Effect of continuous gaseous ozone flow at 1.07 mg m^-3 on the survival of foodborne pathogen cells (in mean log CFU coupon^-1) laid on four surfaces, after 6 days at 4°C.

Strain	Stainless steel			Polypropylene			Glass			Expanded polystyrene

	T0	T6		T0	T6		T0	T6		T0	T6
		O₃	C		O₃	C		O₃	C		O₃	C
L. monocytogenes LMG 10470	6.42 ± 0.14^a	ND	6.14 ± 0.51^a	6.22 ± 0.26^a	ND	6.08 ± 0.11^a	6.70 ± 0.27^a	ND	5.46 ± 0.16^b	6.34 ± 0.25^a	ND	5.21 ± 0.28^b
E. coli ATCC 35401	5.36 ± 0.36^a	ND	ND	5.91 ± 0.33^a	ND	3.60 ± 0.24^b	5.56 ± 0.36^a	ND	ND	5.62 ± 0.90^a	ND	ND
P. aeruginosa DSM 939	7.11 ± 0.22^a	ND	ND	7.18 ± 0.90^a	ND	3.30 ± 0.16^b	7.44 ± 0.48^a	ND	ND	7.81 ± 0.11^a	ND	ND
S. aureus NCTC 8325	5.56 ± 0.05^a	ND	ND	5.70 ± 0.63^a	ND	ND	5.27 ± 0.32^a	ND	ND	5.61 ± 0.44^a	ND	ND

C-inoculated but un-ozonated coupons (control).

ND-not detected after the enrichment procedure described in the Section “Enumeration of Survivors.”

Values are means (±SD). Within rows, means followed by different lowercase letters are significantly different (P < 0.05).