Fig. 2
From: Bioconversion of biphenyl to a polyhydroxyalkanoate copolymer by Alcaligenes denitrificans A41
Growth conditions used for PHA production. First, a one-step cultivation method was used with biphenyl as the sole carbon source. Second, as a two-step procedure, initial cultivation was performed for gaining cell mass and the second step was conducted for polymer production. The highest polymer yield was obtained by two-step cultivation using biphenyl as the sole carbon source with controlled cell mass in the PHA production step. mass: culture for gaining cell mass, polymer: culture for PHA production