However, 15 and 45 °C incubation temperatures
demonstrated an inhibitory effect on the development
of BFL-9 and B-7 strains, respectively. The AC-1 strain showed
an ability to remain viable in temperatures far from its developmental
optimum.
Table 5 – Strain characteristics, including resistance to pH, growth in the presence of bile, NaCl and temperature
tolerance (mean of n = 2).
Strain Resistance
to pHa
Incubation
time
Inhibition of
growth (%) in
the presence
of bileb
Incubation
time
Inhibition of
growth (%) in
the presence
of NaClc
Incubation
time
Temperature
(°C)d
Incubation
time
0 h 3 h 6 h 4 h 8 h 24 h 4 h 8 h 24 h 0 h 24 h
AC-1 2.0 8.4 8.1 8.1 0.3 20 7 0 3 31 5 0 15 7.6 7.8
2.5 8.4 8.3 8.1 0.6 37 16 7 6 65 57 0 37 7.6 9.2
3.0 8.4 8.2 8.2 1.0 33 12 7 10 69 75 0 45 7.6 7.0
7.0 8.2 8.7 9.1
B-7 2.0 8.3 8.2 8.0 0.3 7 2 0 3 15 13 3 15 7.4 7.5
2.5 8.4 8.3 8.0 0.6 22 12 20 6 69 63 21 37 7.4 8.9
3.0 8.2 8.2 8.0 1.0 22 9 11 10 69 75 74 45 7.4 6.2
7.0 8.4 8.4 8.7
BFL-9 2.0 7.0 6.9 5.2 0.3 0 0 28 3 0 25 32 15 5.0 3.8
2.5 7.0 7.0 5.8 0.6 0 0 4 6 0 50 84 37 5.0 7.7
3.0 7.1 7.1 7.0 1.0 0 0 −15 10 0 75 86 45 5.0 5.2
7.0 7.2 7.3 7.4
a Viable