The exopolysaccharides biosynthesis by Candida yeast depends on carbon sources

Background: The exopolysaccharides (EPS) produced by yeast exhibit physico-chemical and rheological properties, which are useful in the production of food and in the cosmetic and pharmaceutical industries as well. The effect was investigated of selected carbon sources on the biosynthesis of EPS by C...

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Autores principales:	Gientka,Iwona, Bzducha-Wróbel,Anna, Stasiak-Rózañska,Lidia, Agnieszka Bednarska,Aleksandra, Blazejak,Stanislaw
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2016
Materias:	Candida Exopolysaccharides biosynthesis EPS Maltose
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000400005
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spelling	oai:scielo:S0717-345820160004000052016-09-13The exopolysaccharides biosynthesis by Candida yeast depends on carbon sourcesGientka,IwonaBzducha-Wróbel,AnnaStasiak-Rózañska,LidiaAgnieszka Bednarska,AleksandraBlazejak,Stanislaw Candida Exopolysaccharides biosynthesis EPS Maltose Background: The exopolysaccharides (EPS) produced by yeast exhibit physico-chemical and rheological properties, which are useful in the production of food and in the cosmetic and pharmaceutical industries as well. The effect was investigated of selected carbon sources on the biosynthesis of EPS by Candida famata and Candida guilliermondii strains originally isolated from kefirs. Results: The biomass yields were dependent on carbon source (sucrose, maltose, lactose, glycerol, sorbitol) and ranged from 4.13 to 7.15 g/L. The highest biomass yield was reported for C. guilliermondii after cultivation on maltose. The maximum specific productivity of EPS during cultivation on maltose was 0.505 and 0.321 for C. guilliermondii and C. famata, respectively. The highest EPS yield was found for C. guilliermondii strain. The EPS produced under these conditions contained 65.4% and 61.5% carbohydrates, respectively. The specific growth rate (µ) of C. famata in medium containing EPS as a sole carbon source was 0.0068 h-1 and 0.0138 h-1 for C. guilliermondii strain. Conclusions: The most preferred carbon source in the synthesis of EPS for both Candida strains was maltose, wherein C. guilliermondii strain showed the higher yield of EPS biosynthesis. The carbon source affected the chemical composition of the resulting EPS and the contribution of carbohydrate in the precipitated preparation of polymers was higher during supplementation of maltose as compared to sucrose. It was also found that the EPS can be a source of carbon for the producing strains.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.19 n.4 20162016-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000400005en10.1016/j.ejbt.2016.02.008
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Candida Exopolysaccharides biosynthesis EPS Maltose
spellingShingle	Candida Exopolysaccharides biosynthesis EPS Maltose Gientka,Iwona Bzducha-Wróbel,Anna Stasiak-Rózañska,Lidia Agnieszka Bednarska,Aleksandra Blazejak,Stanislaw The exopolysaccharides biosynthesis by Candida yeast depends on carbon sources
description	Background: The exopolysaccharides (EPS) produced by yeast exhibit physico-chemical and rheological properties, which are useful in the production of food and in the cosmetic and pharmaceutical industries as well. The effect was investigated of selected carbon sources on the biosynthesis of EPS by Candida famata and Candida guilliermondii strains originally isolated from kefirs. Results: The biomass yields were dependent on carbon source (sucrose, maltose, lactose, glycerol, sorbitol) and ranged from 4.13 to 7.15 g/L. The highest biomass yield was reported for C. guilliermondii after cultivation on maltose. The maximum specific productivity of EPS during cultivation on maltose was 0.505 and 0.321 for C. guilliermondii and C. famata, respectively. The highest EPS yield was found for C. guilliermondii strain. The EPS produced under these conditions contained 65.4% and 61.5% carbohydrates, respectively. The specific growth rate (µ) of C. famata in medium containing EPS as a sole carbon source was 0.0068 h-1 and 0.0138 h-1 for C. guilliermondii strain. Conclusions: The most preferred carbon source in the synthesis of EPS for both Candida strains was maltose, wherein C. guilliermondii strain showed the higher yield of EPS biosynthesis. The carbon source affected the chemical composition of the resulting EPS and the contribution of carbohydrate in the precipitated preparation of polymers was higher during supplementation of maltose as compared to sucrose. It was also found that the EPS can be a source of carbon for the producing strains.
author	Gientka,Iwona Bzducha-Wróbel,Anna Stasiak-Rózañska,Lidia Agnieszka Bednarska,Aleksandra Blazejak,Stanislaw
author_facet	Gientka,Iwona Bzducha-Wróbel,Anna Stasiak-Rózañska,Lidia Agnieszka Bednarska,Aleksandra Blazejak,Stanislaw
author_sort	Gientka,Iwona
title	The exopolysaccharides biosynthesis by Candida yeast depends on carbon sources
title_short	The exopolysaccharides biosynthesis by Candida yeast depends on carbon sources
title_full	The exopolysaccharides biosynthesis by Candida yeast depends on carbon sources
title_fullStr	The exopolysaccharides biosynthesis by Candida yeast depends on carbon sources
title_full_unstemmed	The exopolysaccharides biosynthesis by Candida yeast depends on carbon sources
title_sort	exopolysaccharides biosynthesis by candida yeast depends on carbon sources
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000400005
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_version_	1718441931248238592

The exopolysaccharides biosynthesis by Candida yeast depends on carbon sources

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