Research Article

Duration of Heat Stress Effect on Invasiveness of L. monocytogenes Strains

Table 2

L. monocytogenes strains counts (log cfu/unit) after heating at 54°C for 20 minutes and incubation at 37°C for 0 hours, 24 hours and 48 hours.

Bacterial counts reduction [log cfu/unit]
Strain0 hours after heating24 hours after heating48 hours after heating

L280,27±0,080,62±0,2 0,66±0,02
L840,31±0,060,46±0,120,71±0,23
L410,29±0,090,93±0,171,02±0,16
L450,33±0,070,36±0,080,92±0,05
L560,29±0,100,32±0,090,69±0,14
L710,12±0,010,91±0,24 0,74±0,11
L830,18±0,090,56±0,061,05±0,15
L10570,21±0,050,66±0,210,84±0,15
L20610,65±0,140,99±0,22 0,99±0,12
L41,26±0,05 0,84±0,08 0,58±0,11