Cited by 262Anaerobic Digestion and Biogas ProductionMicrobial Metabolic Engineering and BioproductionBiofuel production and bioconversion

Production of medium-chain fatty acids and higher alcohols by a synthetic co-culture grown on carbon monoxide or syngas

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Diender, Martijn, Stams, Alfons J. M., Sousa, Diana Z.·2016·Biotechnology for Biofuels

Abstract

BACKGROUND: Synthesis gas, a mixture of CO, H2, and CO2, is a promising renewable feedstock for bio-based production of organic chemicals. Production of medium-chain fatty acids can be performed via chain elongation, utilizing acetate and ethanol as main substrates. Acetate and ethanol are main products of syngas fermentation by acetogens. Therefore, syngas can be indirectly used as a substrate for the chain elongation process. RESULTS: Here, we report the establishment of a synthetic co-culture consisting of Clostridium autoethanogenum and Clostridium kluyveri. Together, these bacteria are capable of converting CO and syngas to a mixture of C4 and C6 fatty acids and their respective alcohols. The co-culture is able to grow using solely CO or syngas as a substrate, and presence of acetate significantly stimulated production rates. The co-culture produced butyrate and caproate at a rate of 8.5 ± 1.1 and 2.5 ± 0.63 mmol/l/day, respectively. Butanol and hexanol were produced at a rate of 3.5 ± 0.69 and 2.0 ± 0.46 mmol/l/day, respectively. The pH was found to be a major factor during cultivation, influencing the growth performance of the separate strains and caproate toxicity. CONCLUSION: This co-culture poses an alternative way to produce medium-chain fatty acids and higher alcohols from carbon monoxide or syngas and the process can be regarded as an integration of syngas fermentation and chain elongation in one growth vessel.

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Authors
Diender, M., Stams, A. J. M., & Sousa, D. Z.
Affiliations
Wageningen University & Research (NL)
Corresponding author
Diender, Martijn
Venue
Biotechnology for Biofuels
Published
2016-04-02
Volume
9
Issue
1
Pages
82-82
ISSN
1754-6834 (ISSN-L)
OpenAlex
W2316195511
Cited by
259
References
35
Citations by year
2026: 20 · 2025: 28 · 2024: 35 · 2023: 27 · 2022: 32 · 2021: 29 · 2020: 25 · 2019: 22 · 2018: 17 · 2017: 19 · 2016: 5
FWCI
23.02
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Biotechnology for Biofuels (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Socio-Environmental Systems Modeling (acceptedVersion, cc-by)
  • Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, other-oa)
  • Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, cc-by-nc-nd)
  • Data Archiving and Networked Services (DANS) (submittedVersion, cc-by)
Funders
  • Ministerie van Onderwijs, Cultuur en Wetenschap (SIAM 024.002.002)
  • European Research Council (323009)
Topics
  • Physical Sciences › Engineering › Building and Construction › Anaerobic Digestion and Biogas Production
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
  • Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
Keywords
medium-chain fatty acids, higher alcohols, syngas fermentation, carbon monoxide, chain extension, Clostridium autoethanogenum, Clostridium kluyveri, butyrate, caproate, butanol, hexanol, acetate, pH effect, acetogenic bacteria

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