TABLE 2.
Specific growth rates of E. coli NCIMB 10214 in the presence of peptone and glycine betaine, at low and high osmolarities
| Growth medium osmolarity | Medium content of:
|
Specific growth rate (n)a | |
|---|---|---|---|
| Peptone (0.5%, wt/vol) | Glycine betaine (1 mM) | ||
| Low | − | − | 0.67 ± 0.01 (5) |
| + | − | 1.55 ± 0.11 (4) | |
| High (+ 0.5 M NaCl) | − | − | 0.22 ± 0.02 (6) |
| + | − | 0.74 ± 0.03 (4) | |
| − | + | 0.59 ± 0.04 (2) | |
| + | + | 0.98 ± 0.07 (2) | |
a
Specific growth rates (shown per hour ± standard deviations) were calculated during exponential phase of growth.