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Effect of yeasts on biodegradation potential of immobilized cultures of white rot fungi
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SYSNO ASEP 0478001 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effect of yeasts on biodegradation potential of immobilized cultures of white rot fungi Author(s) Šlosarčíková, P. (CZ)
Novotný, Čeněk (MBU-M) RID, ORCID
Malachová, K. (CZ)
Válková, H. (CZ)
Fojtík, J. (CZ)Source Title Science of the Total Environment. - : Elsevier - ISSN 0048-9697
Roč. 589, JUL 1 (2017), s. 146-152Number of pages 7 s. Language eng - English Country NL - Netherlands Keywords Mixed culture ; Fungal biofilm ; Yeasts Subject RIV EE - Microbiology, Virology OECD category Microbiology Institutional support MBU-M - RVO:61388971 UT WOS 000399848100016 EID SCOPUS 85014065687 DOI 10.1016/j.scitotenv.2017.02.079 Annotation The aim was to investigate the effect of yeast organisms on the degradation process by immobilized cultures of ligninolytic fungi. Immobilization was accomplished by 7-day colonization of polyamide mesh with mycelial fragments. Irpex lacteus decolorized >90% of the initial concentration of 150 mg1(-1) of anthraquinone Remazol Brilliant Blue R dye in three subsequent decolorization cycles and the degradation capacity was not negatively affected by the presence of 10(6) Saccharomyces cerevisiae cells per ml in the mixed culture. The yeast was not able to degrade the dye. I. lacteus biofilm was also resistant to bacterial infection with E. coli. Inoculation of the yeast to pre-formed I. lacteus biofilm culture resulted in a reduction of fungal biomass by 27%. Levels of LiP, MnP and laccase of I. lacteus were not much influenced by S. cerevisiae or E. coli. Similar resilience of P. ostreatus biofilms was observed after exposure to yeast Issatchenkia occidentalis when the fungal degradation capacity measured with Reactive Orange 16 azo dye was maintained over two decolorization cycles. I. occidentalis did not degrade the dye under the conditions used. Formation of densely packed fungal biofilms with abundant extracellular polysaccharide was not impeded by the yeast. Increase of MnP and laccase levels attributable to the presence of A occidentalis was observed Workplace Institute of Microbiology Contact Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Year of Publishing 2018
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