Fig. 2.

Fermentation kinetics of immobilized cultures. The experiments were conducted in anaerobic batch bioreactors containing 0.7 l semi-defined medium supplemented with sugars and with 0.35 l of beads. pH was controlled at 7. The immobilized cell concentration was 11.4 g-CDW/l-gel (see Materials and Methods). (A) Immobilized AFF01/pLOI297 with an initial concentration of 30 g/l glucose (), 30 g/l xylose (), and 20 g/l arabinose () converted into ethanol (). (B) Immobilized CT1101/pLOI297 with an initial concentration of 30 g/l glucose, 20 g/l xylose and 20 g/l arabinose. (C) Relation of consumed sugars from a sugar mixture of glucose, xylose, and arabinose for immobilized cells of AFF01/pLOI297 (), CT1101/pLOI297 () and wild-type MG1655/pLOI297 ().