TABLE 2.

Concentrations of surviving bacteria after several heat treatments in saline solution (NaCl, 0.75%) and whole milk

Bacterium	Heating medium	Temp (°C)	Length of treatment (min)	No. of samples	Mean concn (log10 CFU/ml) of surviving bacteria	SD	Minimum concn (log10 CFU/ml)	Maximum concn (log10 CFU/ml)
E. faecalis	Saline solution	57	0.0	17	6.20	0.08	6.03	6.29
	Saline solution	57	28.0	70	4.13	0.14	4.02	4.90
	Saline solution	57	42.0	66	3.68	0.24	2.91	3.96
	Saline solution	57	56.0	71	2.55	0.29	2.03	3.00
	Whole milk	61	0.0	10	7.17	0.05	7.14	7.23
	Whole milk	61	28.0	74	5.12	0.08	4.98	5.24
	Whole milk	61	42.0	74	4.35	0.21	4.03	4.71
	Whole milk	61	56.0	75	3.81	0.31	3.26	4.09
L. innocua	Saline solution	54	0.0	15	7.90	0.14	7.63	8.21
	Saline solution	54	13.0	99	5.92	0.23	5.27	6.44
	Saline solution	54	19.5	77	4.95	0.32	4.34	5.86
	Saline solution	54	26.0	96	4.06	0.39	3.03	4.88
	Whole milk	54	0.0	10	7.95	0.03	7.91	7.98
	Whole milk	54	28.0	78	5.82	0.13	5.48	6.00
	Whole milk	54	42.0	77	4.77	0.23	3.89	4.99
	Whole milk	54	56.0	75	3.98	0.41	3.39	4.91
P. fluorescens	Saline solution	48	0.0	10	5.69	0.09	5.57	5.84
	Saline solution	48	2.0	71	4.23	0.19	4.03	4.71
	Saline solution	48	4.0	69	3.50	0.29	3.03	3.93
	Saline solution	48	6.0	70	2.42	0.32	2.03	2.97
	Whole milk	48	0.0	16	6.08	0.10	5.96	6.22
	Whole milk	48	3.0	64	5.12	0.08	5.00	5.28
	Whole milk	48	6.0	60	3.72	0.37	3.07	4.37
	Whole milk	48	9.0	59	3.03	0.41	2.21	3.93
S. Enteritidis	Saline solution	53	0.0	10	8.64	0.06	8.56	8.72
	Saline solution	53	5.3	76	5.24	0.11	5.00	5.46
	Saline solution	53	7.0	74	4.33	0.30	3.00	4.99
	Saline solution	53	8.8	74	3.68	0.30	3.08	4.06
	Whole milk	53	0.0	9	7.13	0.07	7.05	7.25
	Whole milk	53	6.6	76	4.48	0.09	4.00	4.56
	Whole milk	53	8.8	74	3.40	0.30	2.84	3.97
	Whole milk	53	12.0	74	2.49	0.31	1.84	2.97