Table 1.

Bacterial concentrations before and after heat treatment.

	Unpasteurised	HoP 62.5°C/30 min		HTST 62°C/5 s		HTST 81°C/5 s
Inoculated species	CFU/ml	CFU/ml	Log reduction	CFU/ml	Log reduction	CFU/ml	Log reduction
Enterococcus faecalis (ATCC29212)	5.8 × 104	0*	4.76	1 × 104	0.76	2.7 × 101	3.32
Cronobacter sakazakii (RV00078)	1.4 × 105	2.5 x101	4.75	1.6 × 103	1.93	0*	5.15
Cronobacter sakazakii (RV5-I-92)	2.1 × 105	0*	5.32	1 × 104	1.32	0*	5.32
Listeria monocytogenes (00,218)	1.8 × 105	0*	5.26	1 × 104	1.26	5	5.26
Listeria monocytogenes (0015)	1.1 × 105	0*	5.04	1 × 104	1.04	0*	5.04

^*lower limit of detection = 10 CFU/ml. Of each species six aliquots were inoculated (n = 2 for HoP, 62°C and 81°C respectively).

CFU, colony forming units; HoP, Holder pasteurisation; HTST, high temperature short time treatment.