In the fermentations with higher salt concentrations (i.e. 9, 12
and 15 g/l NaCl), it was observed that the capacitance readings
were not as constant as for the fermentations with lower salt concentrations,
(i.e. 3.5 and 6.5 g/l NaCl), with more frequent peaks
and drops in the capacitance values, indicating that the cells were
likely to be under stress leading to frequent increases and
decreases in PHA levels (as indicated by the probe) (Fig. 3).