After a preliminary
screening at 48 h to analyze dry biomass and PHA
accumulation, a proper timing of fermentation was
established at 24, 48, 72 and 96 h; the process was monitored
by Nile Red fluorescent dye to check the PHA production.
The cells were harvested by centrifugation at 5000 rpm, for
20 min, at 20 °C (Beckman Coulter, avanti J-HC), washed
with saline solution at 0.9 % and lyophilized overnight.
(Virtis, benchtop 2K). All the assays were done in triplicate