922-923 / 1195
16
Table 6. Ruggedness - Sample temperature after boiling
1
Trial 1
Trial 2
Strains
Test
Sample temperature after boiling (°C)
Sample temperature after boiling (°C)
10
25
50
10
25
50
Listeria
monocytogenes
ATCC 19115
1
1.14
1.21
1;19
1.12
1.06
1.06
2
1.24
1.28
1.32
1.09
1.15
1.10
3
1.32
1.19
1.27
1.07
1.12
1.04
4
1.23
1.34
1.16
1.06
1.03
1.03
5
1,21
1,18
1,19
1,03
1,07
1,03
Mean
1.22
1.24
1.23
1.08
1.09
1.05
Listeria
monocytogenes
ATCC 19117
1
0.92
0.92
0.89
0.95
0.96
1.00
2
0.85
0.94
0.93
0.99
0.94
1.06
3
0.94
0.92
0.93
0.95
1.00
1.02
4
0.91
0.92
0.89
0.99
0.97
1.03
5
0.94
0.92
0.93
0.98
1.02
1.01
Mean
0.91
0.92
0.91
0.97
0.98
1.02
Bacillus cereus
ATCC 27522
1
0.00
0.00
0.00
0.00
0.00
0.00
2
0.00
0.00
0.00
0.00
0.00
0.00
3
0.00
0.00
0.00
0.00
0.00
0.00
4
0.00
0.00
0.00
0.00
0.00
0.00
5
0.00
0.00
0.00
0.00
0.00
0.00
Mean
0.00
0.00
0.00
0.00
0.00
0.00
Positive results = TV
≥
0.05, negative results = TV< 0.05
2
ATCC = American Type Culture Collection
3
4
5
PTM Certification Report