Scientifica

Research Article

Foodborne Listeria monocytogenes: A Real Challenge in Quality Control

Table 1

Summary of the test results of the reference and foodborne Listeria strains.
Bacteria tested⁢API test⁢PCR with hly gene primers⁢MALDI-TOF MS
⁢score values
In this work Rodríguez-Lázaro et al. [21]
L. monocytogenes 
NCAIM B 01934
(ATCC® 15313™)		6510
L. monocytogenes		++L. monocytogenes 
2.430/2.312
L. monocytogenes 
NCAIM B 01966
(ATCC® 35152™)		6510−+L. innocua 
2.427/2.322/2.263/2.461
L. innocua 
NCAIM B01933
(ATCC® 33090™)		7510
L. innocua		−−L. innocua  
2.151
L. monocytogenes 
1.942
L. welshimeri 
NCAIM B01872
(ATCC® 35897™)		7311
L. welshimeri		−−L. welshimeri 
2.211/2.109
L. seeligeri 
NCAIM B01873
(ATCC® 35967™)		3310
L. seeligeri/ivanovii		−+L. monocytogenes  
2.241
L. innocua  
2.179
L. seeligeri  
2.050
L. ivanovii 
NCAIM B02035
(ATCC® 19119™)		3750
L. ivanovii		−−L. ivanovii 
2.412/2.381
L. grayi ssp. grayi 
NCAIM B01871
(ATCC® 19120™)		7130
L. grayi		−−L. grayi 
2.285/2.272
L. grayi ssp. murray 
NCAIM B01372
(ATCC® 25401™)		7130−−L. grayi 
2.266/2.283
Isolate 16510−+L. monocytogenes  
2.010/1.359
Isolate 26510−+L. monocytogenes 
2.251/1.541
Isolate 36510++L. monocytogenes 
2.118/2.083
Isolate 46510++L. monocytogenes 
2.295/2.235
Isolate 56510−+L. monocytogenes 
2.245/2.229
Isolate 66510++L. monocytogenes 
2.058/1.998
Isolate 76510++L. monocytogenes 
2.314/2.349
Isolate 86510++L. monocytogenes  
2.346/1.992
Isolate 96510−+L. monocytogenes  
2.246/2.045
Isolate 106510++L. monocytogenes  
2.120/2.395
Isolate 116510−+L. monocytogenes  
2.380/2.258
Numeric profiles.
Results from repeated analyses.
No growth on PALCAM agar.
+: detectable PCR product.
−: no PCR product.