Bioplastic production by feeding the marine Rhodovulum sulfidophilum DSM-1374 with four different carbon sources under batch, fed-batch and semi-continuous growth regimes

•Organic acid sources for P3HB production by marine bacterium Rhodovulum sulfidophilum DSM-1374.•Either batch or semi-continuous growth procedures in photo-fermentative processes.•Specific nutrient deficiency to increase cumulative poly-3-hydroxybutyrate in cells.•Novel 4 L working-volume photobioreactor for parallel production of H2 and bioplastic.