Anaerobic Degradation of Hexadecan-2-one by a Microbial Enrichment Culture under Sulfate-Reducing Conditions

Abstract

A microbial enrichment culture from marine sediment was able to grow on hexadecan-2-one as the sole source of carbon and energy under sulfate-reducing conditions. Oxidation of the ketone involved carboxylation reactions and was coupled to sulfide production. This enrichment culture also grew on 6,10,14-trimethylpentadecan-2-one.

Improving coal bioavailability for biogenic methane production via hydrogen peroxide oxidation

“…The improvement is, in part, due to the formation of new chemical species which have an average conversion of 0.811, significantly higher than the overall conversion (0.312 in PEN9-003 treated with 200% standard dosage of H 2 O 2 for 30 days). This is because these compounds are rich in heterogeneous moieties such as carboxyl group, ether bond, carbonyl group, and hydroxyl group, which have been associated with high bioavailability (Chen et al, 2017;Hirschler et al, 1998;Jones et al, 2013;Scott & Jones, 2000). The enhancement in biodegradation may also be a result of an enrichment of compounds that show higher bioavailability in the no-oxidant control (see Section 3.4.2 and Section 3.4.3).…”

Biotransformation of monoterpenes, bile acids, and other isoprenoids in anaerobic ecosystems

“…Another phytol‐derived early diagenic compound, 6,10,14‐trimethylpentadecan‐2‐one, is metabolized by a denitrifying bacterium [35]and in sulfate‐reducing enrichment cultures [36]. The degradative problem of this compound, the activation of an β‐methyl ketone, may occur by carboxylation similar to acetone [37]and acetophenone [38].…”