Cargando…

Influence of phenolic substrates utilised by yeast Trichosporon cutaneum on the degradation kinetics

The degradation kinetics of different phenolic substrates utilised by Trichosporon cutaneum R57 was studied. The following compounds were used as substrates: phenol, resorcinol, hydroquinone, 3-nitrophenol, 2,6-dinitrophenol, 3-chloro phenol and p-cresol. The specific degradation rates (Q(s)) were d...

Descripción completa

Detalles Bibliográficos
Autores principales: Gerginova, Maria, Zlateva, Plamena, Peneva, Nadejda, Alexieva, Zlatka
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Taylor & Francis 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4648232/
https://www.ncbi.nlm.nih.gov/pubmed/26692781
http://dx.doi.org/10.1080/13102818.2014.901671
_version_ 1782401216044597248
author Gerginova, Maria
Zlateva, Plamena
Peneva, Nadejda
Alexieva, Zlatka
author_facet Gerginova, Maria
Zlateva, Plamena
Peneva, Nadejda
Alexieva, Zlatka
author_sort Gerginova, Maria
collection PubMed
description The degradation kinetics of different phenolic substrates utilised by Trichosporon cutaneum R57 was studied. The following compounds were used as substrates: phenol, resorcinol, hydroquinone, 3-nitrophenol, 2,6-dinitrophenol, 3-chloro phenol and p-cresol. The specific degradation rates (Q(s)) were described by a Haldane kinetic model. The unknown model parameters were estimated using the mathematical optimisation procedure for direct search. The results obtained demonstrated that Q(s) varied greatly in the experiments carried out. The level of biodegradability depended on the different structure and toxicity of compounds used as carbon substrates. The highest Q(s) values were observed for less toxic hydroxylated phenols (0.77–0.85 h(−1)), while the most toxic chlorinated phenols were characterised with the lowest Q(s) values (0.224 h(−1)). The results obtained with different concentrations of resorcinol (from 0.2 to 0.8 g L(−1)) and 2,6-dinitrophenol (from 0.2 to 0.7 g L(−1)) demonstrated a growing inhibitory effect directly correlating with the extended time necessary for complete degradation of both compounds.
format Online
Article
Text
id pubmed-4648232
institution National Center for Biotechnology Information
language English
publishDate 2014
publisher Taylor & Francis
record_format MEDLINE/PubMed
spelling pubmed-46482322015-12-10 Influence of phenolic substrates utilised by yeast Trichosporon cutaneum on the degradation kinetics Gerginova, Maria Zlateva, Plamena Peneva, Nadejda Alexieva, Zlatka Biotechnol Biotechnol Equip Articles; Agriculture & Environmental Biotechnology The degradation kinetics of different phenolic substrates utilised by Trichosporon cutaneum R57 was studied. The following compounds were used as substrates: phenol, resorcinol, hydroquinone, 3-nitrophenol, 2,6-dinitrophenol, 3-chloro phenol and p-cresol. The specific degradation rates (Q(s)) were described by a Haldane kinetic model. The unknown model parameters were estimated using the mathematical optimisation procedure for direct search. The results obtained demonstrated that Q(s) varied greatly in the experiments carried out. The level of biodegradability depended on the different structure and toxicity of compounds used as carbon substrates. The highest Q(s) values were observed for less toxic hydroxylated phenols (0.77–0.85 h(−1)), while the most toxic chlorinated phenols were characterised with the lowest Q(s) values (0.224 h(−1)). The results obtained with different concentrations of resorcinol (from 0.2 to 0.8 g L(−1)) and 2,6-dinitrophenol (from 0.2 to 0.7 g L(−1)) demonstrated a growing inhibitory effect directly correlating with the extended time necessary for complete degradation of both compounds. Taylor & Francis 2014-01-02 2014-06-04 /pmc/articles/PMC4648232/ /pubmed/26692781 http://dx.doi.org/10.1080/13102818.2014.901671 Text en © 2014 The Author(s). Published by Taylor & Francis. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The moral rights of the named author(s) have been asserted.
spellingShingle Articles; Agriculture & Environmental Biotechnology
Gerginova, Maria
Zlateva, Plamena
Peneva, Nadejda
Alexieva, Zlatka
Influence of phenolic substrates utilised by yeast Trichosporon cutaneum on the degradation kinetics
title Influence of phenolic substrates utilised by yeast Trichosporon cutaneum on the degradation kinetics
title_full Influence of phenolic substrates utilised by yeast Trichosporon cutaneum on the degradation kinetics
title_fullStr Influence of phenolic substrates utilised by yeast Trichosporon cutaneum on the degradation kinetics
title_full_unstemmed Influence of phenolic substrates utilised by yeast Trichosporon cutaneum on the degradation kinetics
title_short Influence of phenolic substrates utilised by yeast Trichosporon cutaneum on the degradation kinetics
title_sort influence of phenolic substrates utilised by yeast trichosporon cutaneum on the degradation kinetics
topic Articles; Agriculture & Environmental Biotechnology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4648232/
https://www.ncbi.nlm.nih.gov/pubmed/26692781
http://dx.doi.org/10.1080/13102818.2014.901671
work_keys_str_mv AT gerginovamaria influenceofphenolicsubstratesutilisedbyyeasttrichosporoncutaneumonthedegradationkinetics
AT zlatevaplamena influenceofphenolicsubstratesutilisedbyyeasttrichosporoncutaneumonthedegradationkinetics
AT penevanadejda influenceofphenolicsubstratesutilisedbyyeasttrichosporoncutaneumonthedegradationkinetics
AT alexievazlatka influenceofphenolicsubstratesutilisedbyyeasttrichosporoncutaneumonthedegradationkinetics