article 6 chemistry 6 metabolism 6 Batch cell culture 4 Biomass 4 Bioreactors 4 Carbon 4 Carbon partitioning 4 Carbon precursors 4 Cofactors 4 D-lactate 4 Escherichia coli 4 Ethanol 4 Fed-batch cultures 4 Glycerol 4 Hydroxybutyrates 4 Lactate Dehydrogenases 4 Lactic Acid 4 Metabolic Networks and Pathways 4 Metabolic products 4 NAD 4 NADP 4 Poly(3-hydroxybutyrate) 4 Polyesters 4 Recombinant Escherichia coli 4 Reducing power 4 Substrates 4 Time Factors 4 alcohol 4 biomass 4