The studied flavanones were dissolved in DMF in order to achieve
a final concentration of DMF of 1% (v/v) at the growth media (MEA,
40 g/l) and 0.25 mM of each flavanone. For that purpose, each flavanone
was weighted and dissolved in 2.5 ml of DMF, added to 250 ml
of culture medium at 42–45 °C and homogenized. Then 10 ml was