Table 1. Effectiveness of disinfectant I and II treatment for inactivating E. sakazakii (Cronobacter spp.) in water after 10 min exposure (Unit: log 10 CFU/mL)

Strain No. of E. sakazakii (Cronobacter spp.)	Source	Inoculation volume	Control	Disinfectant I (ppm)					Disinfectant II (ppm)					Type of isolates
Strain No. of E. sakazakii (Cronobacter spp.)	Source	Inoculation volume	Water	1,000	200	100	50	10	200	50	10	5	1	Type of isolates
2.82	UGA	6.0	5.7	-	-	5.8	5.8	5.6	-	-	-	4.0	5.2	Clinical isolates (9)
2.81	UGA	6.4	6.3	-	-	6.2	6.1	6.1	-	-	-	3.7	5.8
2.83	UGA	5.6	5.6	-	-	5.0	4.9	5.3	-	-	-	-	5.3
2.84	UGA	6.2	6.0	-	-	3.9	5.4	6.0	-	-	-	1.8	5.9
2.41	UGA	5.8	5.8	-	-	2.0	4.5	5.8	-	-	-	2.8	5.7
2.40	UGA	6.1	5.8	-	-	-	-	3.8	-	-	-	-	1.6
2.39	UGA	6.1	5.9	-	-	-	-	5.6	-	-	-	-	3.6
1.91	UGA	6.0	6.0	-	-	-	-	6.0	-	-	-	-	3.3
2.80	UGA	6.9	6.0	-	-	2.9	6.0	5.8	-	-	-	4.1	5.9
FSM 298	NRC	6.2	6.1	-	-	6.1	6.2	6.0	-	-	-	3.1	6.1	Environmental isolates (49)
FSM 261	NRC	6.2	6.1	-	-	-	-	4.2	-	-	-	-	4.5
FSM 274	NRC	5.0	4.6	-	-	-	-	3.2	-	-	-	-	2.5
FSM 145	UGA	6.1	5.9	-	-	-	-	5.9	-	-	-	-	4.7
FSM 294	NRC	6.2	6.1	-	-	-	-	6.0	-	-	-	-	3.1
FSM 273	NRC	5.7	5.7	-	-	-	-	5.6	-	-	-	-	3.3
FSM 292	NRC	5.9	5.9	-	-	-	-	5.9	-	-	-	-	3.3
FSM 306	NRC	4.8	4.8	-	-	-	-	4.9	-	-	-	-	1.9
FSM 265	NRC	5.6	5.9	-	-	-	-	5.8	-	-	-	-	4.2
FSM 275	NRC	5.8	5.8	-	-	-	-	5.7	-	-	-	-	3.2
5	UGA	6.0	5.9	-	-	-	-	6.0	-	-	-	-	1.0
3	UGA	5.6	5.8	-	-	-	-	5.7	-	-	-	-	-
2	UGA	5.8	6.0	-	-	-	-	5.9	-	-	-	-	2.9
1	UGA	5.9	6.1	-	-	-	-	5.9	-	-	-	-	6.0
7	UGA	5.8	6.2	-	-	-	-	6.0	-	-	-	-	3.2
6	UGA	5.2	5.4	-	-	-	-	5.3	-	-	-	-	2.2
2.44	UGA	5.3	5.3	-	-	-	-	5.2	-	-	-	-	1.4
2.43	UGA	5.7	5.7	-	-	-	-	5.9	-	-	-	-	3.8
FSM 262	NRC	5.9	6.0	-	-	-	-	5.9	-	-	-	-	3.2
FSM 270	NRC	6.0	5.9	-	-	-	-	5.9	-	-	-	-	3.7
FSM 271	NRC	5.9	6.0	-	-	-	-	6.0	-	-	-	-	4.1
FSM 272	NRC	5.8	5.8	-	-	-	-	5.8	-	-	-	-	4.0
FSM 287	NRC	5.8	5.6	-	-	-	-	5.6	-	-	-	-	3.7
FSM 290	NRC	6.1	6.1	-	-	-	-	6.0	-	-	-	-	3.7
FSM 302	NRC	5.7	5.6	-	-	-	-	5.7	-	-	-	-	5.3
FSM 295	NRC	6.6	5.7	-	-	-	-	5.7	-	-	-	-	4.9
FSM 293	NRC	5.8	5.5	-	-	-	-	5.6	-	-	-	-	3.3
FSM 297	NRC	6.1	5.9	-	-	-	-	5.9	-	-	-	-	3.9
FSM 299	NRC	6.2	6.2	-	-	-	-	6.1	-	-	-	-	3.4
FSM 303	NRC	6.0	5.8	-	-	-	-	5.8	-	-	-	-	3.2
FSM 318	NRC	6.1	6.0	-	-	-	-	6.0	-	-	-	-	3.1
FSM 321	NRC	5.9	5.9	-	-	-	-	5.8	-	-	-	-	5.5
FSM 323	NRC	6.0	5.8	-	-	-	-	5.8	-	-	-	-	3.0
2.42	UGA	6.6	6.2	-	-	-	-	6.2	-	-	-	-	2.7
2.45	UGA	6.2	6.0	-	-	-	-	5.8	-	-	-	-	1.8
2.46	UGA	6.0	5.5	-	-	-	-	5.5	-	-	-	-	1.0
2.47	UGA	6.7	6.2	-	-	-	-	6.3	-	-	-	-	2.1
2.68	UGA	6.7	6.3	-	-	-	-	5.7	-	-	-	-	2.9
2.69	UGA	6.2	6.1	-	-	-	-	6.0	-	-	-	-	3.2
2.70	UGA	6.3	5.6	-	-	-	-	5.9	-	-	-	-	3.8
2.71	UGA	6.8	6.3	-	-	-	-	6.4	-	-	-	-	3.5
2.72	UGA	6.4	5.8	-	-	-	-	5.7	-	-	-	-	2.5
2.73	UGA	6.3	6.0	-	-	-	-	6.2	-	-	-	-	5.8
2.74	UGA	6.4	6.1	-	-	-	-	6.1	-	-	-	-	2.4
2.75	UGA	4.5	4.0	-	-	-	-	4.1	-	-	-	-	-
2.76	UGA	6.2	5.6	-	-	-	-	5.7	-	-	-	-	4.4
2.77	UGA	5.9	5.6	-	-	-	-	5.7	-	-	-	-	3.1
2.78	UGA	5.9	5.8	-	-	-	-	5.7	-	-	-	-	2.5
2.79	UGA	6.2	5.9	-	-	-	-	5.8	-	-	-	-	2.6

Disinfectant I contained 6.15% sodium hypochlorite.
Disinfectant II contained both 2.25% n-alkyl dimethylbenzyl ammonium chloride and 2.25% n-alkyl ethylbenzyl ammonium chloride.
UGA, Dr. Jeffrey Kornacki, University of Georgia, Athens, GA; NRC, Dr. John Marugg, Nestle Research Center, Lausanne, Switwerland.