Table 1 Morphological and biochemical characteristics of lactic acid-producing isolates
Characters | Lactobacilli | Lactococci | Enterococci |
|---|---|---|---|
Cell shape | Rods | Cocci | Cocci |
Oxygen requirements | microaerophilic | facultative | facultative |
Gram staining | + | + | + |
Catalase test | − | − | − |
Growth at 10 °C | − | + | + |
Growth at 45 °C | + | − | + |
Growth at 50 °C | + | − | + |
Growth in 6.5 % NaCl | − | − | + |
Growth at pH 9.6 | − | − | + |
Sugar fermentation | |||
Sucrose | + | ± | + |
Mannitol | + | ± | + |
Maltose | + | + | + |
Rhamnose | − | − | ± or − |
Fructose | + | ± | + |
Galactose | + | ± | + |
Xylose | − | + | ± or − |