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Metabolism of aromatic aldehydes as cosubstrates by the acetogen Clostridium formicoaceticum

Title data

Frank, Claudia ; Schwarz, Uwe ; Matthies, Carola ; Drake, Harold L.:
Metabolism of aromatic aldehydes as cosubstrates by the acetogen Clostridium formicoaceticum.
In: Archives of Microbiology. Vol. 170 (1998) Issue 6 . - pp. 427-434.
ISSN 1432-072X
DOI: https://doi.org/10.1007/s002030050663

Abstract in another language

When the acetogen Clostridium formicoaceticum was cultivated on mixtures of aromatic compounds (e.g., 4-hydroxybenzaldehyde plus vanillate), the oxidation of aromatic aldehyde groups occurred more rapidly than did O-demethylation. Likewise, when fructose and 4-hydroxybenzaldehyde were simultaneously provided as growth substrates, fructose was utilized only after the aromatic aldehyde group was oxidized to the carboxyl level. Aromatic aldehyde oxidoreductase activity was constituitive (activities approximated 0.8 U mg-1), and when pulses of 4-hydroxybenzaldehyde were added during fructose-dependent growth, the rate at which fructose was utilized decreased until 4-hydroxybenzaldehyde was consumed. Although 4-hydroxybenzaldehyde inhibited the capacity of cells to metabolize fructose, lactate or gluconate were consumed simultaneously with 4-hydroxybenzaldehyde, and lactate or aromatic compounds lacking an aldehyde group were utilized concomitantly with fructose. These results demonstrate that (i) aromatic aldehydes can be utilized as co-substrates and have negative effects on the homoacetogenic utilization of fructose by C. formicoaceticum, and (ii) the consumption of certain substrates by this acetogen is not subject to catabolite repression by fructose.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER7176
Institutions of the University: Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Ecological Microbiology
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 30 Sep 2015 05:56
Last Modified: 30 Sep 2015 05:56
URI: https://eref.uni-bayreuth.de/id/eprint/19956