Fig. 5From: Metabolic engineering of Bacillus subtilis for chiral pure meso-2,3-butanediol productionMeso-2,3-BD production from glucose using BSF9 in fed-batch fermentation. Filled square glucose concentration; Filled circle 2,3-BD concentration; Filled triangle AC concentration; Filled diamond cell density, optical density at 600 nm (OD600). Cultivation was carried out at an initial pH of 6.5; during the fermentation processes, the pH was uncontrolled. Agitation speed was 300 rpm, and aeration rate was 0.02 vvmBack to article page