Assessment of toxicity of a biosurfactant from Candida sphaerica UCP 0995 cultivated with industrial residues in a bioreactor

Background: The aim of the present study was to propose a low-cost method for the production of a biosurfactant by the yeast Candida sphaerica and assess its toxicity and phytotoxicity. The medium was formulated with distilled water supplemented with residue from a soy oil refinery (5%) and corn ste...

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Autores principales:	Bezerra de Souza Sobrinho,Humberto, de Luna,Juliana Moura, Rufino,Raquel Diniz, Figueiredo Porto,Ana Lúcia, Sarubbo,Leonie Asfora
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2013
Materias:	biosurfactant bioreactor Candida sphaerica industrial residues toxicity
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000400004
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spelling	oai:scielo:S0717-345820130004000042013-08-22Assessment of toxicity of a biosurfactant from Candida sphaerica UCP 0995 cultivated with industrial residues in a bioreactorBezerra de Souza Sobrinho,Humbertode Luna,Juliana MouraRufino,Raquel DinizFigueiredo Porto,Ana LúciaSarubbo,Leonie Asfora biosurfactant bioreactor Candida sphaerica industrial residues toxicity Background: The aim of the present study was to propose a low-cost method for the production of a biosurfactant by the yeast Candida sphaerica and assess its toxicity and phytotoxicity. The medium was formulated with distilled water supplemented with residue from a soy oil refinery (5%) and corn steep liquor (2.5%) as substrates. These two products were the sources of carbon and nitrogen as well as mineral elements to encourage the growth of the microorganism and production of a biosurfactant. Results: The isolated biosurfactant yield was 6.364 g/l. The biosurfactant exhibited an excellent ability to reduce surface tension (26 mN/m) and demonstrated no toxicity against seeds of Brassica oleracea, Chicoria intybus and Solanum gilo or the micro crustacean Artemia salina employed as a bioindicator. The biosurfactant exhibited no antimicrobial activity against the fungi and bacteria tested. Conclusions: The promising results obtained in this study indicate the feasibility of producing biosurfactants from powerful non-toxic organic residues and their application in the bioremediation of contaminated soil and water.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.16 n.4 20132013-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000400004en10.2225/vol16-issue4-fulltext-4
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	biosurfactant bioreactor Candida sphaerica industrial residues toxicity
spellingShingle	biosurfactant bioreactor Candida sphaerica industrial residues toxicity Bezerra de Souza Sobrinho,Humberto de Luna,Juliana Moura Rufino,Raquel Diniz Figueiredo Porto,Ana Lúcia Sarubbo,Leonie Asfora Assessment of toxicity of a biosurfactant from Candida sphaerica UCP 0995 cultivated with industrial residues in a bioreactor
description	Background: The aim of the present study was to propose a low-cost method for the production of a biosurfactant by the yeast Candida sphaerica and assess its toxicity and phytotoxicity. The medium was formulated with distilled water supplemented with residue from a soy oil refinery (5%) and corn steep liquor (2.5%) as substrates. These two products were the sources of carbon and nitrogen as well as mineral elements to encourage the growth of the microorganism and production of a biosurfactant. Results: The isolated biosurfactant yield was 6.364 g/l. The biosurfactant exhibited an excellent ability to reduce surface tension (26 mN/m) and demonstrated no toxicity against seeds of Brassica oleracea, Chicoria intybus and Solanum gilo or the micro crustacean Artemia salina employed as a bioindicator. The biosurfactant exhibited no antimicrobial activity against the fungi and bacteria tested. Conclusions: The promising results obtained in this study indicate the feasibility of producing biosurfactants from powerful non-toxic organic residues and their application in the bioremediation of contaminated soil and water.
author	Bezerra de Souza Sobrinho,Humberto de Luna,Juliana Moura Rufino,Raquel Diniz Figueiredo Porto,Ana Lúcia Sarubbo,Leonie Asfora
author_facet	Bezerra de Souza Sobrinho,Humberto de Luna,Juliana Moura Rufino,Raquel Diniz Figueiredo Porto,Ana Lúcia Sarubbo,Leonie Asfora
author_sort	Bezerra de Souza Sobrinho,Humberto
title	Assessment of toxicity of a biosurfactant from Candida sphaerica UCP 0995 cultivated with industrial residues in a bioreactor
title_short	Assessment of toxicity of a biosurfactant from Candida sphaerica UCP 0995 cultivated with industrial residues in a bioreactor
title_full	Assessment of toxicity of a biosurfactant from Candida sphaerica UCP 0995 cultivated with industrial residues in a bioreactor
title_fullStr	Assessment of toxicity of a biosurfactant from Candida sphaerica UCP 0995 cultivated with industrial residues in a bioreactor
title_full_unstemmed	Assessment of toxicity of a biosurfactant from Candida sphaerica UCP 0995 cultivated with industrial residues in a bioreactor
title_sort	assessment of toxicity of a biosurfactant from candida sphaerica ucp 0995 cultivated with industrial residues in a bioreactor
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000400004
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Assessment of toxicity of a biosurfactant from Candida sphaerica UCP 0995 cultivated with industrial residues in a bioreactor

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