Escherichia coli 41 article 32 nonhuman 24 Arca 23 Hydroxybutyrates 20 Polyesters 20 bioreactor 20 poly(3 hydroxybutyric acid) 20 Escherichia coli Proteins 17 Bacterial Outer Membrane Proteins 16 Glucose 16 Glycerol 16 Repressor Proteins 16 bacterial strain 16 glycerol 16 metabolism 16 Mutation 15 alcohol 15 Azotobacter 14 Bioreactors 14 Ethanol 14 carbon 14 aerobic metabolism 13 glucose 13 Bacteria (microorganisms) 12 genetics 12 Oxidation-Reduction 11 gene mutation 11 Biomass 10 bacterial gene 10