Table 2. Duration of the lag phase and maximum specific growth rate at 43°C and pH 4.5 of S. Typhimurium previously exposed to heat and acid shock.

	43°C			pH 4.5
Cell history	lag (h)		<$>\raster(80%)="rg1"<$> (h−1)	lag (h)	<$>\raster(80%)="rg2"<$> (h−1)
End of heat shock (45°C-30 min)	2.24±0.864*	0.911±0.136		20.5±0.636	0.444±0.0745
Immediately after heat shock and resetting temperature at 25°C	2.35±0.856	1.01±0.142		21.6±0.675	0.627±0.0804
Thirty minutes after heat shock and resetting temperature at 25°C	2.37±0.817	1.09±0.0378		22.1±0.169	0.687±0.0242
Control (25°C-pH 7-0 min)	2.56±0.878	1.12±0.152		22.1±0.0834	0.713±0.0605
Control (25°C-pH 7-30 min)	2.67±0.922	1.01±0.079		21.4±0.0476	0.57±0.0331
Control (25°C-pH 7-60 min)	1.9±0.00354	0.982±0.237		21.6±0.124	0.598±0.00135
End of acid shock (pH 5-30 min)	2.58±0.921	1.17±0.106		21.7±0.397	0.636±0.0472
Immediately after acid shock and resettingpH value at 7	2.57±0.889	1.09±0.183		21.6±0.122	0.591±0.0402
Thirty minutes after acid shock and resettingpH value at 7	2.4±0.992	0.951±0.309		21.8±0.389	0.617±0.0694

^*mean±standard deviation of 3 independent replicated experiments.