Logo do repositório
 
Publicação

Isolation and screening of yeast strains possessing synthetic dye decolorizing activity

2009Documento de conferência Acesso aberto
Ver registo simples
dc.contributor.authorSilva, A. R. S.
dc.contributor.authorVaz, M. J. S.
dc.contributor.authorKwiatkowska, B.
dc.contributor.authorMalcata, F. Xavier
dc.contributor.authorPintado, M. E.
dc.contributor.authorMoreira, P. R.
dc.date.accessioned2011-09-12T16:39:07Z
dc.date.available2011-09-12T16:39:07Z
dc.date.issued2009
dc.description.abstractSynthetic dyes are organic compounds that have been extensively used for textile dyeing and paper printing, as well as additives in petroleum, pharmaceutical and cosmetic products. However, owing to their aromatic and heterocyclic moieties, synthetic dyes are often highly recalcitrant and some are even toxic and mutagenic. Because of their resistance to microbial degradation, dyes can cause considerable environmental pollution, so their removal has received considerable attention. Many microorganisms have been found to be capable of degrading dyes; these include bacteria, filamentous fungi, yeasts, actinomycetes and algae. White rot fungi, in particular, are able to transform (and even mineralize) some dyes, based on their extracellular, non-specific and non-stereoselective enzyme systems. Involvement of ligninolytic peroxidases (viz. Versatile, MnP and LiP), besides laccases, has been demonstrated in the degradation pathways of some of those dyes. However, filamentous fungi are poorly adapted to a continuous wastewater treatment unit, due to their low rates of growth, coupled with a filamentous exuberant mycelium. Yeasts possess the advantage of growing faster than filamentous fungi, and can in addition resist to unfavorable environments. However, degradation of synthetic dyes by yeasts has not been extensively reported to date. Reporting this communication, the process of isolation of wild yeasts from wastewater treatment plants, and subsequent screening (along with other 81 cheese isolates), for the ability of decolorizing textile dyes is reported — covering solid media. Three isolates were further tested for dye decolorization in liquid cultures. In liquid culture the yeast isolate LIIIS36 exhibited a high efficiency of decolorization in the case of two of the dyes tested (Levafix Red CA and Levafix Yellow CA). The observation of colorless yeast cells might unfold the existence of an underlying biodegradation mechanism. The possibility to decolorize more than one dye simultaneously with the same strain (LIIIS36), and the fact that the maximum decolorization extent is reached in a mere 24—36 hours of incubation, are clues for its potential as part of future bioremediation strategies.
dc.description.versioninfo:eu-repo/semantics/acceptedVersion
dc.identifier.citation14TH EUROPEAN CONGRESS ON BIOTECHNOLOGY, Barcelona, Spain, 13-16 Setembro, 2009 - "New Biotechnology." ISSN 1871-6784. 25s (2009) S78por
dc.identifier.urihttp://hdl.handle.net/10400.14/5383
dc.language.isoengpor
dc.publisherElsevierpor
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleIsolation and screening of yeast strains possessing synthetic dye decolorizing activitypor
dc.typeconference object
dspace.entity.typePublication
person.familyNameMalcata
person.familyNamePintado
person.familyNameMoreira
person.givenNameFrancisco
person.givenNameMaria Manuela
person.givenNamePatrícia
person.identifier456608
person.identifier.ciencia-id1B13-38A5-35F5
person.identifier.ciencia-id2F13-AAE0-3405
person.identifier.ciencia-id3A17-0D5A-2C03
person.identifier.orcid0000-0003-3073-1659
person.identifier.orcid0000-0002-0760-3184
person.identifier.orcid0000-0002-0004-851X
person.identifier.ridF-5696-2013
person.identifier.scopus-author-id7102542478
person.identifier.scopus-author-id7004483898
person.identifier.scopus-author-id7006510563
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
relation.isAuthorOfPublicationa06c00da-0e2f-4434-8ede-4d7b22c0dfe9
relation.isAuthorOfPublicationba387c7d-27c9-4016-895c-b35597e91ebc
relation.isAuthorOfPublicationcd69b8c0-d44f-46ae-91d2-24a36418f50a
relation.isAuthorOfPublication.latestForDiscoveryba387c7d-27c9-4016-895c-b35597e91ebc

Ficheiros

Principais
A mostrar 1 - 1 de 1
Miniatura indisponível
Nome:
Isolation and screening of yeast strains possessing synthetic dye decolorizing activity.pdf
Tamanho:
19.39 KB
Formato:
Adobe Portable Document Format
Ver/Abrir
Licença
A mostrar 1 - 1 de 1
Miniatura indisponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Ver/Abrir

Coleções

ESB - Documentos de Conferências / Conference Objects