Fig. 3From: Disruption of poly (3-hydroxyalkanoate) depolymerase gene and overexpression of three poly (3-hydroxybutyrate) biosynthetic genes improve poly (3-hydroxybutyrate) production from nitrogen rich medium by Rhodobacter sphaeroidesVolumetric PHB production of the recombinant HJΔphaZ strains. Cells were anaerobically grown at 30 °C under illumination at 8.2 W m−2 for 5 days. Three independent fermentation experiments were done. Data are presented as the mean ± standard deviation (n = 3)Back to article page