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Evaluation of Pyrolysis Oil as Carbon Source for Fungal Fermentation

Dörsam, Stefan; Kirchhoff, Jennifer; Bigalke, Michael; Dahmen, Nicolaus; Syldatk, Christoph; Ochsenreither, Katrin

Pyrolysis oil, a complex mixture of several organic compounds, produced during flash pyrolysis of organic lignocellulosic material was evaluated for its suitability as alternative carbon source for fungal growth and fermentation processes. Therefore several fungi from all phyla were screened for their tolerance toward pyrolysis oil.
Additionally Aspergillus oryzae and Rhizopus delemar, both established organic acid producers, were chosen as model organisms to investigate the suitability of pyrolysis oil as carbon source in fungal production processes. It was observed that A. oryzae tolerates pyrolysis oil concentrations between 1 and 2% depending on growth phase or stationary production phase, respectively. To investigate possible reasons for the low tolerance level, eleven substances from pyrolysis oil including aldehydes, organic acids, small organic compounds and phenolic substances were selected and maximum concentrations still allowing growth and organic acid production were determined.
Furthermore, effects of substances to malic acid production were analyzed and compounds were categorized regarding their properties in three ... mehr

Zugehörige Institution(en) am KIT Fakultät für Chemieingenieurwesen und Verfahrenstechnik (CIW)
Institut für Katalyseforschung und -Technologie (IKFT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.3389/fmicb.2016.02059
ISSN: 1664-302X
URN: urn:nbn:de:swb:90-661094
KITopen ID: 1000066109
Erschienen in Frontiers in microbiology
Band 7
Seiten Art. Nr.: 2059
Lizenz CC BY 4.0: Creative Commons Namensnennung 4.0 International
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagworte pyrolysis oil, fermentation, Aspergillus oryzae, Rhizopus delemar, organic acids, carbon source, fungi, tolerance mechanisms
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