Production of D-arabitol from D-xylose by the oleaginous yeast Rhodosporidium toruloides IFO0880

Abstract

The sugar alcohol D-arabitol is one of the Department of Energy's top twelve bio-based building block chemicals. In this study, we found that the oleaginous yeast Rhodosporidium toruloides IFO0880 produces D-arabitol during growth on xylose in nitrogen-rich medium. Efficient xylose utilization was a prerequisite for extracellular D-arabitol production. During growth in complex media, R. toruloides produced 22 ± 2, 32 ± 2, and 49 ± 2 g/L D-arabitol from 70, 105, and 150 g/L xylose, respectively. In addition, we found that R. toruloides could potentially be used for the co-production of lipids and D-arabitol from xylose. These results demonstrate that R. toruloides can be used to produce multiple value-added chemicals from xylose.

Keywords: D-arabitol; D-xylose; Lipid; Oleaginous yeast; Rhodosporidium toruloides.