TABLE 4.
Franconibacter, Siccibacter, and Cronobacter strain identification by MALDI-TOF MS before application of extended MALDI Biotyper database
| Strain IDa | Species | Most frequent identification (%)b | Reliability scorec |
|---|---|---|---|
| FR 29 | F. helveticus | Not reliable identification (37) | − |
| FR 31 | F. helveticus | Raoultella ornithinolytica (53) | + |
| FR 32 | F. helveticus | Raoultella ornithinolytica (22) | + |
| FR 33 | F. helveticus | Raoultella ornithinolytica (44) | + |
| FR 35 | F. helveticus | Not reliable identification (32) | − |
| FR 38 | F. pulveris | Enterobacter radicincitans (44) | + |
| FR 39 | F. pulveris | Enterobacter radicincitans (28) | + |
| FR 41 | F. pulveris | Enterobacter radicincitans (26) | + |
| FR 42 | F. pulveris | Enterobacter radicincitans (54) | + |
| SI 44 | S. turicensis | Not reliable identification (29) | − |
| SI 45 | S. turicensis | Not reliable identification (21) | − |
| CB 03 | C. sakazakii | C. sakazakii (100) | +++ |
| CB 51 | C. malonaticus | C. sakazakii (100) | +++ |
| CB 55 | C. muytjensii | C. sakazakii (100) | +++ |
| CB 59 | C. universalis | C. sakazakii (100) | +++ |
| CB 61 | C. turicensis | C. sakazakii (100) | +++ |
| CB 62 | C. dublinensis | C. sakazakii (100) | +++ |
| CB 78 | C. condimenti | C. sakazakii (100) | ++ |
a
CB, Cronobacter; FR, Franconibacter; SI, Siccibacter.
b
The percentage was determined from a total of 93.
c
+++, score of ≥2.3, defined as “highly probable species identification”; ++, score of ≥2.0, defined as “secure genus, probable species identification”; +, score of ≥1.7, defined as “probable genus identification”; −, score of <1.7, defined as “not reliable identification.”