2 ,3-butanediol dehydrogenase 1 Acetoin 1 Co-production 1 Enterobacter cloacae 1 Environmental concerns 1 Fermentation 1 Glucose 1 Industrial compounds 1 Lactate dehydrogenase 1 Lactic acid 1 Lactic acid production 1 Metabolic engineering 1 Microbial fermentation 1 Petroleum industry 1 Resource utilizations 1 Sodium bicarbonate 1 Succinic acid 1 aqueous solution 1 biomass 1 fermentation 1 fossil fuel 1 metabolism microbial activity 1 organic compound 1