Biodegradation of deproteinized potato wastewater and glycerol during cultivation of Rhodotorula glutinis yeast

Background Deproteinized potato wastewater and glycerol are two by-products which are difficult to dispose. The objective of this study was to determine the ability of Rhodotorula glutinis to use glycerol and nitrogen compounds present in deproteinized potato wastewater and to evaluate the ability o...

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Autores principales:	Kot,Anna Maria, Blazejak,Stanislaw, Kurcz,Agnieszka, Gientka,Iwona
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2015
Materias:	Biodegradation Chemical oxygen demand Industrial waste Rhodotorula
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000600007
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spelling	oai:scielo:S0717-345820150006000072016-01-21Biodegradation of deproteinized potato wastewater and glycerol during cultivation of Rhodotorula glutinis yeastKot,Anna MariaBlazejak,StanislawKurcz,AgnieszkaGientka,Iwona Biodegradation Chemical oxygen demand Industrial waste Rhodotorula Background Deproteinized potato wastewater and glycerol are two by-products which are difficult to dispose. The objective of this study was to determine the ability of Rhodotorula glutinis to use glycerol and nitrogen compounds present in deproteinized potato wastewater and to evaluate the ability of simultaneous biodegradation of potato wastewater and glycerol via microbiological methods. Results It has been found that R. glutinis used glycerol and potato wastewater as a source of carbon and nitrogen, respectively. The highest degree of glycerol content (70.6%) reduction was found after cultivation of the investigated strain using a medium with 5% glycerol. In this medium, a significant reduction in the total protein content, estimated at 61%, was observed. The process of 72 h cultivation of yeast in a medium containing potato wastewater and 5% glycerol reduced the chemical oxygen demand (COD) more than 77%. Supplementation of media with high doses of glycerol (i.e. 20 and 25%) led to decreased metabolic activity in the yeast strain tested. Conclusion It has been found that there is a possibility of simultaneous biodegradation of potato wastewater and glycerol during the cultivation of R. glutinis.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.18 n.6 20152015-11-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000600007en10.1016/j.ejbt.2015.08.006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Biodegradation Chemical oxygen demand Industrial waste Rhodotorula
spellingShingle	Biodegradation Chemical oxygen demand Industrial waste Rhodotorula Kot,Anna Maria Blazejak,Stanislaw Kurcz,Agnieszka Gientka,Iwona Biodegradation of deproteinized potato wastewater and glycerol during cultivation of Rhodotorula glutinis yeast
description	Background Deproteinized potato wastewater and glycerol are two by-products which are difficult to dispose. The objective of this study was to determine the ability of Rhodotorula glutinis to use glycerol and nitrogen compounds present in deproteinized potato wastewater and to evaluate the ability of simultaneous biodegradation of potato wastewater and glycerol via microbiological methods. Results It has been found that R. glutinis used glycerol and potato wastewater as a source of carbon and nitrogen, respectively. The highest degree of glycerol content (70.6%) reduction was found after cultivation of the investigated strain using a medium with 5% glycerol. In this medium, a significant reduction in the total protein content, estimated at 61%, was observed. The process of 72 h cultivation of yeast in a medium containing potato wastewater and 5% glycerol reduced the chemical oxygen demand (COD) more than 77%. Supplementation of media with high doses of glycerol (i.e. 20 and 25%) led to decreased metabolic activity in the yeast strain tested. Conclusion It has been found that there is a possibility of simultaneous biodegradation of potato wastewater and glycerol during the cultivation of R. glutinis.
author	Kot,Anna Maria Blazejak,Stanislaw Kurcz,Agnieszka Gientka,Iwona
author_facet	Kot,Anna Maria Blazejak,Stanislaw Kurcz,Agnieszka Gientka,Iwona
author_sort	Kot,Anna Maria
title	Biodegradation of deproteinized potato wastewater and glycerol during cultivation of Rhodotorula glutinis yeast
title_short	Biodegradation of deproteinized potato wastewater and glycerol during cultivation of Rhodotorula glutinis yeast
title_full	Biodegradation of deproteinized potato wastewater and glycerol during cultivation of Rhodotorula glutinis yeast
title_fullStr	Biodegradation of deproteinized potato wastewater and glycerol during cultivation of Rhodotorula glutinis yeast
title_full_unstemmed	Biodegradation of deproteinized potato wastewater and glycerol during cultivation of Rhodotorula glutinis yeast
title_sort	biodegradation of deproteinized potato wastewater and glycerol during cultivation of rhodotorula glutinis yeast
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000600007
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Biodegradation of deproteinized potato wastewater and glycerol during cultivation of Rhodotorula glutinis yeast

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