Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 438885
Title Glycerol fermentation to hydrogen by Thermotoga maritima: Proposed pathway and bioenergetic considerations
Author(s) Maru, B.T.; Bielen, A.A.M.; Constanti, M.; Medina, F.; Kengen, S.W.M.
Source International Journal of Hydrogen Energy 38 (2013)14. - ISSN 0360-3199 - p. 5563 - 5572.
DOI https://doi.org/10.1016/j.ijhydene.2013.02.130
Department(s) Microbiology
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2013
Keyword(s) biohydrogen production - escherichia-coli - caldicellulosiruptor-saccharolyticus - 3-phosphate dehydrogenase - anaerobic fermentation - nucleotide-sequence - dark fermentation - embden-meyerhof - sp-nov - bacteria
Abstract The production of biohydrogen from glycerol, by the hyperthermophilic bacterium Thermotoga maritima DSM 3109, was investigated in batch and chemostat systems. T. maritima converted glycerol to mainly acetate, CO2 and H2. Maximal hydrogen yields of 2.84 and 2.41 hydrogen per glycerol were observed for batch and chemostat cultivations, respectively. For batch cultivations: i) hydrogen production rates decreased with increasing initial glycerol concentration, ii) growth and hydrogen production was optimal in the pH range of 7–7.5, and iii) a yeast extract concentration of 2 g/l led to optimal hydrogen production. Stable growth could be maintained in a chemostat, however, when dilution rates exceeded 0.025 h-1 glycerol conversion was incomplete. A detailed overview of the catabolic pathway involved in glycerol fermentation to hydrogen by T. maritima is given. Based on comparative genomics the ability to grow on glycerol can be considered as a general trait of Thermotoga species. The exceptional bioenergetics of hydrogen formation from glycerol is discussed
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