Effects of organic and inorganic additives on flotation recovery of washed cells of Saccharomyces cerevisiae resuspended in water

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dc.contributor.authorDeSousa, SR
dc.contributor.authorLaluce, Cecília [UNESP]
dc.contributor.authorJafelicci, M.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:18:01Z
dc.date.available2014-05-20T14:18:01Z
dc.date.issued2006-03-01
dc.description.abstractSeparation of microbial cells by flotation recovery is usually carried out in industrial reactors or wastewater treatment systems, which contain a complex mixture of microbial nutrients and excretion products. In the present study, the separation of yeast cells by flotation recovery was carried out using a simple flotation recovery systems containing washed yeast cells resuspended in water in order to elucidate the effects of additives (defined amounts of organic and inorganic acids, ethanol, surfactants and sodium chloride) on the cellular interactions at interfaces (cell/aqueous phase and cell/air bubble). When sodium chloride, organic acids (notably propionic, succinic and acetic acids) and organic surfactants (sodium dodecyl sulphate (SDS), cetyltrimethylammonium bromide (CTAB) and Nonidet P40) were added to the flotation recovery system, significant increases in the cell recovery of yeast hydrophobic cells (Saccharomyces cerevisiae, strain FLT-01) were observed. The association of ethanol to acetic acid solution (a minor by-product of alcoholic fermentation) in the flotation recovery system, containing washed cells of strain FLT-01 resuspended in water, leading to an increased flotation recovery at pH 5.5. Thus, the association among products of the cellular metabolism (e.g., ethanol and acetic acid) can improve yeast cell recovery by flotation recovery. (c) 2006 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista, Dept Bioquim & Tecnol Quim, Araraquara, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Quim Araraquara, Dept Quim Fis, Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Bioquim & Tecnol Quim, Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Quim Araraquara, Dept Quim Fis, Araraquara, SP, Brazil
dc.format.extent77-83
dc.identifierhttp://dx.doi.org/10.1016/j.colsurfb.2006.01.011
dc.identifier.citationColloids and Surfaces B-biointerfaces. Amsterdam: Elsevier B.V., v. 48, n. 1, p. 77-83, 2006.
dc.identifier.doi10.1016/j.colsurfb.2006.01.011
dc.identifier.issn0927-7765
dc.identifier.urihttp://hdl.handle.net/11449/25416
dc.identifier.wosWOS:000236167800012
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofColloids and Surfaces B: Biointerfaces
dc.relation.ispartofjcr3.997
dc.relation.ispartofsjr1,071
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectfroth flotation recoverypt
dc.subjectyeastpt
dc.subjectweak organic acidpt
dc.subjectsodium chloridept
dc.subjectsurfactantspt
dc.titleEffects of organic and inorganic additives on flotation recovery of washed cells of Saccharomyces cerevisiae resuspended in wateren
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes6423374942748412[2]
unesp.author.orcid0000-0002-2462-7997[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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