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    Xylitol is widely used in the food and pharmaceutical industries as a valuable commodity product. Biotechnological production of xylitol from lignocellulosic biomass by microorganisms is a promising alternative option to chemical synthesis or bioconversion from D-xylose. In this study, four metabolic mutants of Aspergillus niger were constructed and evaluated for xylitol accumulation from D-xylose and lignocellulosic biomass. All mutants had strongly increased xylitol production from pure D-xylose, beechwood xylan, wheat bran and cotton seed hulls compared to the reference strain, but not from several other feed stocks. The triple mutant ΔladAΔxdhAΔsdhA showed the best performance in xylitol production from wheat bran and cotton seed hulls. This study demonstrated the large potential of A. niger for xylitol production directly from lignocellulosic biomass by metabolic engineering. Copyright © 2021 The Author(s). Published by Elsevier Ltd.. All rights reserved.


    Jiali Meng, Tania Chroumpi, Miia R Mäkelä, Ronald P de Vries. Xylitol production from plant biomass by Aspergillus niger through metabolic engineering. Bioresource technology. 2022 Jan;344(Pt A):126199

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    PMID: 34710597

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