Table 2 Phenotypic grouping of bacteria isolated from ice cubes. n Number of isolates, n.d. not determined
From: Presence of pathogenic bacteria in ice cubes and evaluation of their survival in different systems
Characteristic | Groups | |||||
|---|---|---|---|---|---|---|
I (n = 252) | II (n = 90) | III (n = 231) | IV (n = 162) | V (n = 18) | VI (n = 360) | |
Cell morphology | Straight rod | Short rod | Coccus (cluster) | Coccoid rod | Curved rod | Straight rod |
Gram reaction | Positive | Positive | Positive | Negative | Negative | Negative |
Catalase test | Positive | Positive | Positive | Positive | Positive | Positive |
Motility | – | – | – | – | + | + |
Spore formation | + | – | n.d. | – | – | – |