TABLE 1.
Characterization and AHL production of 96 psychrotrophic Enterobacteriaceae strains isolated from cold-smoked salmon
| Total no. | AHL productiona
|
Hydrolysis
|
Decarboxylase
|
Fermentation of sorbitol | Gas from glucose | Tentative identification | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| pSB403 | C. violaceum | DNA | Gelatin | Arginine | Ornithin | Lysin | ||||
| 38 | 27 | 33 | − | −b | − | − | − | − | + | E. agglomerans |
| 21 | 0 | 21 | − | − | − | − | − | + | − | E. agglomerans |
| 9 | 0 | 0 | − | − | − | − | − | + | + | R. aquatilisc |
| 2 | 2 | 2 | − | + | − | − | − | − | + | Not identified |
| 3 | 0 | 0 | + | + | − | − | + | + | + | Serratia sp. |
| 23 | 21 | 4 | + | + | − | + | + | + | + | S. liquefaciens |
| 96 | 50 | 60 | ||||||||
a
Production of AHL measured by light emission from pSB403 or by violacin production by C. violaceum. The column gives the number of positive strains.
b
One strain positive.
c
Identified by API 20E (bioMérieux).