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Identification of Bio-oil Compound Utilizing Yeasts Through Phenotypic Microarray Screening

Kostas, ET; Cooper, M; Shepherd, BJ; Robinson, JP; (2019) Identification of Bio-oil Compound Utilizing Yeasts Through Phenotypic Microarray Screening. Waste and Biomass Valorization 10.1007/s12649-019-00636-7. Green open access

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Abstract

Abstract: Biomass pyrolysis bio-oil contains a plethora of carbon sources with the potential to be utilized by microorganisms and converted into high value products. However, the majority of these compounds are either highly toxic to microorganisms or are not directly utilizable. Hence research is required to develop methods of separating microbe friendly compounds from inhibitory ones, and to also identify novel microorganisms that can utilise the principal carbon sources in pyrolysis bio-oil. This study employed a phenotypic microarray (PM) technique that measured yeast metabolic output to screen for and shortlist yeast strains able to metabolize various bio-oil carbon sources, with a focus on the anhydrosugar levoglucosan. Four strains of yeast (two Pichia spp. and two Kluyveromyces spp.) were shortlisted due to their high metabolic output (between 79.7 and 113.7 redox signal intensity) on levoglucosan from the PM assay. Under anaerobic fermentation conditions the strains were able to uptake levoglucosan (between 79 and 100% uptake efficiency) but not produce bioethanol; yet trace amounts of acetic acid were generated. This study demonstrated the application of applying the PM technique to screen for novel yeast strains with abilities to metabolize compounds present in pyrolysis bio-oil that could lead to the identification of novel levoglucosan utilization pathways. Graphical Abstract: [Figure not available: see fulltext.].

Type: Article
Title: Identification of Bio-oil Compound Utilizing Yeasts Through Phenotypic Microarray Screening
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/s12649-019-00636-7
Publisher version: http://doi.org/10.1007/s12649-019-00636-7
Language: English
Additional information: Copyright information © The Author(s) 2019, Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Biochemical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10072210
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