The seed medium contained 20 g/L glucose, 10 g/L peptone, 10 g/L yeast extract,
and 5 g/L NaCl. Its initial pH was adjusted to 7.0 with 2 M NaOH. The prepared
medium was then transferred into 250 or 500 mL Erlenmeyer flasks and autoclaved
at 115 ◦C for 30 min. All experimental cultures were incubated at 180 rpm and 28 ◦C.