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Title: Xylitol production at high temperature by engineered Kluyveromyces marxianus. Author: Zhang J, Zhang B, Wang D, Gao X, Hong J. Journal: Bioresour Technol; 2014; 152():192-201. PubMed ID: 24291795. Abstract: Several recombinant Kluyveromyces marxianus strains were constructed through overexpressing the Neurospora crassa xylose reductase genes. YZJ015, which maintained the original xylitol dehydrogenase gene, produced xylitol with the highest productivity (1.49 g L(-1) h(-1)) from 100 g L(-1) xylose at 42 °C. Even at 45 °C, YZJ015 was still able to produce 60.03 g L(-1) xylitol from 100 g L(-1) xylose with a productivity of 1.25 g L(-1)h(-1). In addition, for 20 rounds of cell recycling at 42 °C, YZJ015 produced 71.35 g L(-1) xylitol from 100 g L(-1) xylose with a productivity of 4.43 g L(-1) h(-1) per cycle. YZJ017, in which the xylitol dehydrogenase gene was disrupted, produced 100.02 g L(-1) xylitol at a yield of 1.01 g g(-1) from 100 g L(-1) xylose with 40 g L(-1) glycerol as co-substrate at 42 °C. These engineered strains provide an excellent foundation for xylitol production at elevated temperatures.[Abstract] [Full Text] [Related] [New Search]