886-887 / 1195
Table 3. Comparison of LMX method with reference methods to detect
Listeria monocytogenes
inoculated in various food matrices at
241
low level of inoculation (0.2-2 CFU/test portion). No false-positives were detected.
242
Matrix
Strain
MPN
a
/ 25 g
N
b
Alternative
Reference
dPOD
C
f
95% CI
g
Chi square
analysis
X
c
POD
C
d
95% CI
x
POD
C
e
95% CI
Ground Beef
L. monocyto
-genes
ATCC 13932
0.945
25
7
0.28
0.14-0.48
7
0.28
0.14-0.48
0
-0.24--0.24
0.00
No Significant
Difference
95% CI 0.43-1.54
Queso Fresco
L. monocyto
-genes
ATCC 19114
0.794
95% CI 0.47-1.31
25
11
0.44
0.27-0.63
11
0.44
0.27-0.63
0
-0.26-0.26
0.00
No Significant
Difference
Deli Ham
L. monocyto
-genes
ATCC 7644
1.31
95% CI 0.79-2.55
25
16
0.64
0.45-0.80
15
0.60
0.40-0.77
0.04
-0.21-0.29
0.083
No Significant
Difference
Deli Turkey
L. monocyto
-genes
ATCC 7644
1.31
95% CI 0.79-2.55
25
16
0.64
0.45-0.80
15
0.60
0.40-0.77
0.04
-0.21-0.29
0.75
No Significant
Difference
243
PTM Certification Modification Report