The anaerobic degradation of 3-chloro-4-hydroxybenzoate in freshwater sediment proceeds via either chlorophenol or hydroxybenzoate to phenol and subsequently to benzoate

Article Abstract:

The degradation pathway of 3-chloro-4-hydroxybenzoate (3-Cl,4-OHB) by a methanogenic freshwater sediment sample was elucidated. The results showed that the pathway for 3-Cl,4-OHB degradation proceeds via either chlorophenol or hydroxybenzoate to phenol and subsequently to benzoate. The choice of pathway depends on prior exposure of samples to other chlorinated or hydroxylated compounds with related structural elements. The results suggest that the sediment sample contains at least two different organisms or enzymes which can dechlorinate 3-Cl,4-OHB to 4-hydroxybenzoate.

Microbial metabolism, Chlorophenols

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Anaerobic transformation of alkanes to fatty acids by a sulfate-reducing bacterium, strain Hxd3

Article Abstract:

Results reveal that alkane is anaerobically transformed to a fatty acid by the sulfate-reducing bacterium, strain Hxd3, through subterminal carboxylation at the C-3 position of the alkane and elimination of the two terminal carbon atoms as shown by mass spectral analysis.

United States, Science & research, Microbiological synthesis, Sulfur bacteria, Chemical reactions, Alkanes, Fatty acid synthesis, Sulphur bacteria

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