. 2008 Jun 27;74(17):5563–5567. doi: 10.1128/AEM.00319-08

TABLE 2.

Mean (n = 3) shoulder durations and inactivation rates (± standard deviations) of individual Listeria monocytogenes strains in a simulated gastrointestinal system (GC at pH 2.0 within 88 min; IC at pH 6.5; 37°C) after inoculation (1 ml) into 100 ml of TSBYE-G and incubation for 4 h at 30°C^b

Strain	GC		Maximum inactivation rate (log CFU/ml/min) in IC
Strain	Shoulder duration (min)^a	Maximum inactivation rate (log CFU/ml/min)	Maximum inactivation rate (log CFU/ml/min) in IC
558	0.00 ± 0.00^A	0.003 ± 0.001^A	0.008 ± 0.006^A
R2-500		0.003 ± 0.003^A	0.010 ± 0.009^A
R2-501	68.66 ± 42.85^BC	0.002 ± 0.003^A	0.004 ± 0.001^A
Scott A	77.48 ± 0.74^B	0.209 ± 0.019^B	0.006 ± 0.002^A
N1-225	40.77 ± 34.76^C	0.010 ± 0.007^A	0.009 ± 0.007^A
N1-227	71.49 ± 3.31^B	0.019 ± 0.006^A	0.011 ± 0.012^A
C1-056	76.88 ± 2.37^B	0.262 ± 0.022^B	0.004 ± 0.005^A
N3-031	29.64 ± 51.33^D	0.029 ± 0.047^A	0.009 ± 0.011^A
J1-101		0.005 ± 0.002^A	0.013 ± 0.011^A
10403S		0.002 ± 0.001^A	0.008 ± 0.007^A
A1-254	39.10 ± 32.04^CD	0.032 ± 0.018^A	0.016 ± 0.007^A
J1-158	51.94 ± 19.76^BC	0.042 ± 0.029^A	0.009 ± 0.003^A
J1-168	40.90 ± 31.77^CD	0.013 ± 0.009^A	0.006 ± 0.009^A

Latency to death. For blank cells, no shoulder was observed (inactivation was immediate). No shoulder was observed for the IC.

Different superior capital letters within a column show significantly different data (P < 0.05).