Fig. 3
Time course of batch fermentation by B. licheniformis strains RH02, RH03, RH04, and RH05 from a glucose and xylose mixture (3:1). a RH02; b RH03; c RH04; d RH05. The fermentations were conducted in a 5-L bioreactor with 2.5 L of initial medium. The initial concentrations of glucose and xylose were approximately 60.0 and 20.0 g/L, respectively. The cultivation was performed at 50 °C with stirring at 80 rpm. The pH was maintained at 7.0 by automatic addition of 25% (w/v) Ca(OH)2. Each fermentation condition was repeated at least twice, and typical fermentation kinetics are shown here