aldehydo-L-arabinose → D-Arabinose

Participants

Reaction Steps

FIG. 5A shows that strain IMS0002 is capable of fermenting 20 gl−1 L-arabinose to ethanol during an anaerobic batch fermentation of approximately 70 hours. The specific growth rate under anaerobic conditions with L-arabinose as sole carbon source was 0.05±0.001 h−1. Taking into account the ethanol evaporation during the batch fermentation, the ethanol yield from 20 gl−1 arabinose was 0.43±0.003 g g−1. Without evaporation correction the ethanol yield was 0.35±0.01 g g−1 of arabinose. No formation of arabinitol was observed during anaerobic growth on arabinose. In FIG. 5B, the ethanolic fermentation of a mixture of 20 gl−1 glucose and 20 g l−1 L-arabinose by strain IMS0002 is shown. L-arabinose consumption started after glucose depletion. Within 70 hours, both the glucose and L-arabinose were completely consumed. The ethanol yield from the total of sugars was 0.42±0.003 g g−1.

Provenance & Evidence