Biogenic propane production by a marine Photobacterium strain isolated from the Western English Channel

Felicity Currie, Matthew Twigg, Nicholas Huddleson, Keith Simons, Roger Marchant, Ibrahim M Banat

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Abstract

Propane is a major component of liquefied petroleum gas, a major energy source for off-grid communities and industry. The replacement of fossil fuel-derived propane with more sustainably derived propane is of industrial interest. One potential production route is through microbial fermentation. Here we report, for the first time, the isolation of a marine bacterium from sediment capable of natural propane biosynthesis. Propane production, both in mixed microbial cultures generated from marine sediment and in bacterial monocultures was detected and quantified by gas chromatography–flame ionization detection. Using DNA sequencing of multiple reference genes, the bacterium was shown to belong to the genus Photobacterium. We postulate that propane biosynthesis is achieved through inorganic carbonate assimilation systems. The discovery of this strain may facilitate synthetic biology routes for industrial scale production of propane via microbial fermentation.
Original languageEnglish
Number of pages11
JournalFrontiers in Microbiology
Early online date25 Oct 2022
DOIs
Publication statusPublished online - 25 Oct 2022

Bibliographical note

Funding information:
This research was jointly funded through an industrial partnership with SHV Energy (Capellalaan 65, Hoofddorp, 2132 Jl, The Netherlands); Invest Northern Ireland Proof of Concept grant 909 (Bio-propane); and a Department for the Economy (NI)/SHV Energy Co-operative Awards in Science and Technology (CAST) Ph.D. studentship.

Keywords

  • propane
  • biogas
  • microbial
  • marine bacteria
  • Photobacterium

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