ISSN:
1432-0614
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Abstract The capability of five strains of the phototrophic bacterium Rhodopseudomonas palustris to produce molecular hydrogen (H2) from the aromatic acids benzoate, p–hydroxybenzoate, cinnamate and D- and L-mandelate was investigated. Optimal H2 production was achieved when the strains were grown anaerobically in the light at 10,000 lx under nitrogen (N) limitation using 1 mM L-glutamate as an N source. In the presence of 2 mM benzoate or L-mandelate as carbon and electron sources, strain DSM 131 produced 45% H2 of the maximal theoretical value and strain F2 32%, respectively. Increased H2 production correlated with increased nitrogenase activities, but H2 formation was not further stimulated by inhibition of the H2 uptake (hup) hydrogenase with ethylenediaminetetraacetic acid (EDTA).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01982526
Permalink