Anaerobic degradation of hydroaromatic compounds by newly isolated fermenting bacteria

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1992
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Aerobic organisms degrade hydroaromatic compounds via the hydroaromatic pathway yielding protocatechuic acid which is further metabolized by oxygenase-mediated ring fission in the 3-oxoadipate pathway. No information exists on anaerobic degradation of hydroaromatics so far. We enriched and isolated from various sources of anoxic sediments several strains of rapidly growing gram-negative bacteria fermenting quinic (1,3,4,5-tetrahydroxy-cyclohexane-1-carboxylic acid) and shikimic acid (3,4,5-trihydroxy-1-cyclohexene-1-carboxylic acid) in the absence of external electron acceptors. Quinic and shikimic acid were the only ones utilized of more than 30 substrates tested. The marine isolates formed acetate, butyrate, and H2, whereas all freshwater strains formed acetate and propionate as typical fermentation products. Aromatic intermediates were not involved in this degradation. Characterization of the isolates, fermentation balances for both hydroaromatic compounds, and enzyme activities involved in one degradation pathway are presented.

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570 Biowissenschaften, Biologie
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Anaerobic degradation, hydroaromatic compounds, quinic acid, shikimic acid
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ISO 690BRUNE, Andreas, Bernhard SCHINK, 1992. Anaerobic degradation of hydroaromatic compounds by newly isolated fermenting bacteria. In: Archives of Microbiology. 1992, 158(5), pp. 320-327. ISSN 0302-8933. eISSN 1432-072X. Available under: doi: 10.1007/BF00245360
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@article{Brune1992Anaer-7377,
  year={1992},
  doi={10.1007/BF00245360},
  title={Anaerobic degradation of hydroaromatic compounds by newly isolated fermenting bacteria},
  number={5},
  volume={158},
  issn={0302-8933},
  journal={Archives of Microbiology},
  pages={320--327},
  author={Brune, Andreas and Schink, Bernhard}
}
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