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Inhibitor Tolerance: A Comparison between Rhizopus sp. and Saccharomyces cerevisiae
University of Borås, School of Engineering.
University of Borås, School of Engineering.
University of Borås, School of Engineering.ORCID iD: 0000-0003-4887-2433
2013 (English)In: BioResources, ISSN 1930-2126, E-ISSN 1930-2126, Vol. 8, no 4, 5524-5535 p.Article in journal (Refereed) Published
Abstract [en]

Zygomycetes fungi are able to produce ethanol, and their biomass may hold a high market value, making them interesting microorganisms from a biorefinery perspective. In the present study, the inhibitor tolerance of the Zygomycetes fungus Rhizopus sp. was evaluated and compared with a flocculating strain of Saccharomyces cerevisiae. The inhibitors furfural, 5-hydroxymethylfurfural [HMF], acetic acid, and levulinic acid and the phenolic compounds catechol, guaiacol, and vanillin were applied in different combinations in a semi-synthetic medium. Glucose uptake and conversion of HMF in the presence of inhibitors were analyzed for the two organisms, and it appeared that the inhibitor resistances of Rhizopus sp. and S. cerevisiae were comparable. However, in the presence of catechol (0.165 g L-1), guaiacol (0.186 g L-1), and vanillin (0.30 g L-1), the glucose uptake by S. cerevisiae was only 3.5% of its uptake in a medium without inhibitors, while under equal conditions, Rhizopus sp. maintained 43% of its uninhibited glucose uptake.

Place, publisher, year, edition, pages
North Carolina State University , 2013. Vol. 8, no 4, 5524-5535 p.
Keyword [en]
Rhizopus, Saccharomyces cerevisiae, Inhibitor tolerance, Phenolic compounds, Carboxylic acids, Furans
National Category
Engineering and Technology
Research subject
Resource Recovery
Identifiers
URN: urn:nbn:se:hb:diva-1643ISI: 000328280700059Local ID: 2320/12865OAI: oai:DiVA.org:hb-1643DiVA: diva2:869712
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2016-06-28Bibliographically approved

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http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_08_4_5524_FazeliNejad_Inhibitor_Tolerance

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CiteExportLink to record
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