Print Email Facebook Twitter Xylose anaerobic conversion by open-mixed cultures Title Xylose anaerobic conversion by open-mixed cultures Author Temudo, M.F. Mato, T. Kleerebezem, R. Van Loosdrecht, M.C.M. Faculty Applied Sciences Department Biotechnology Date 2008-11-18 Abstract Xylose is, after glucose, the dominant sugar in agricultural wastes. In anaerobic environments, carbohydrates are converted into volatile fatty acids and alcohols. These can be used as building blocks in biotechnological or chemical processes, e.g., to produce bioplastics. In this study, xylose fermentation by mixed microbial cultures was investigated and compared with glucose under the same conditions. The product spectrum obtained with both substrates was comparable. It was observed that, in the case of xylose, a higher fraction of the carbon was converted into catabolic products (butyrate, acetate, and ethanol) and the biomass yield was approximately 20% lower than on glucose, 0.16 versus 0.21 Cmol X/Cmol S. This lower yield is likely related to the need of an extra ATP during xylose uptake. When submitted to a pulse of glucose, the population cultivated on xylose could instantaneously convert the glucose. No substrate preference was observed when glucose and xylose were fed simultaneously to the continuously operated bioreactor. Subject xyloseglucosefermentationbulk chemicalshydrogenmixed microbial population To reference this document use: http://resolver.tudelft.nl/uuid:159fa1fe-3700-43f3-9d80-9a9658bc9061 Publisher Springer ISSN 1432-0614 Source Applied Microbiology and Biotechnology, 82 (2), 2009 Part of collection Institutional Repository Document type journal article Rights (c) 2008 Temudo, M.F. ; Mato, T. ; Kleerebezem, R. ; van Loosdrecht, M.C.M. ; Springer Files PDF Temudo_2008.pdf 278.66 KB Close viewer /islandora/object/uuid:159fa1fe-3700-43f3-9d80-9a9658bc9061/datastream/OBJ/view