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dc.contributor.authorMazzeo, Dânia Elisa Christofoletti [UNESP]
dc.contributor.authorFernandes, Thaís Cristina Casimiro [UNESP]
dc.contributor.authorMarin-Morales, Maria Aparecida [UNESP]
dc.date.accessioned2014-05-27T11:25:58Z
dc.date.available2014-05-27T11:25:58Z
dc.date.issued2011-09-01
dc.identifierhttp://dx.doi.org/10.1016/j.chemosphere.2011.06.056
dc.identifier.citationChemosphere, v. 85, n. 1, p. 13-18, 2011.
dc.identifier.issn0045-6535
dc.identifier.issn1879-1298
dc.identifier.urihttp://hdl.handle.net/11449/72623
dc.description.abstractPetroleum and derivatives have been considered one of the main environmental contaminants. Among petroleum derivatives, the volatile organic compounds benzene, toluene, ethylbenzene and xylene (BTEX) represent a major concern due to their toxicity and easy accumulation in groundwater. Biodegradation methods seem to be suitable tools for the clean-up of BTEX contaminants from groundwater. Genotoxic and mutagenic potential of BTEX prior and after biodegradation process was evaluated through analyses of chromosomal aberrations and MN test in meristematic and F 1 root cells using the Allium cepa test system. Seeds of A. cepa were germinated into five concentrations of BTEX, non-biodegraded and biodegraded, in ultra-pure water (negative control), in MMS 4×10 -4M (positive control) and in culture medium used in the biodegradation (blank biodegradation control). Results showed a significant frequency of both chromosomal and nuclear aberrations. The micronucleus (MN) frequency in meristematic cells was significant for most of tested samples. However, MN was not present in significant levels in the F 1 cells, suggesting that there was no permanent damage for the meristematic cell. The BTEX effects were significantly reduced in the biodegraded samples when compared to the respective non-biodegraded concentrations. Therefore, in this study, the biodegradation process showed to be a reliable and effective alternative to treat BTEX-contaminated waters. Based on our results and available data, the BTEX toxicity could also be related to a synergistic effect of its compounds. © 2011 Elsevier Ltd.en
dc.format.extent13-18
dc.language.isoeng
dc.relation.ispartofChemosphere
dc.sourceScopus
dc.subjectChromosomal aberration
dc.subjectGenotoxicity
dc.subjectMicronucleus
dc.subjectMutagenicity
dc.subjectPetroleum derivatives
dc.subjectAllium cepa
dc.subjectBiodegradation process
dc.subjectBTEX mixture
dc.subjectCellular damage
dc.subjectCulture medium
dc.subjectEnvironmental contaminant
dc.subjectGenotoxic
dc.subjectGenotoxicities
dc.subjectMeristematic cells
dc.subjectNegative control
dc.subjectPermanent damage
dc.subjectRoot cells
dc.subjectSynergistic effect
dc.subjectTest systems
dc.subjectUltra-pure water
dc.subjectBenzene
dc.subjectCell culture
dc.subjectChromosomes
dc.subjectDegradation
dc.subjectEthylbenzene
dc.subjectGroundwater
dc.subjectGroundwater pollution
dc.subjectMicrobiology
dc.subjectToluene
dc.subjectToxicity
dc.subjectVolatile organic compounds
dc.subjectXylene
dc.subjectBiodegradation
dc.subjectbenzene
dc.subjectethylbenzene
dc.subjectground water
dc.subjecttoluene
dc.subjectxylene
dc.subjectbioaccumulation
dc.subjectbiodegradation
dc.subjectchromosome
dc.subjectgroundwater pollution
dc.subjectmonocotyledon
dc.subjectmutagenicity
dc.subjectpetroleum
dc.subjectsampling
dc.subjecttoxicity
dc.subjecttoxicity test
dc.subjectvolatile organic compound
dc.subjectcell damage
dc.subjectchromosome aberration
dc.subjectcontrolled study
dc.subjectculture medium
dc.subjectgenotoxicity
dc.subjectmicronucleus test
dc.subjectnonhuman
dc.subjectonion
dc.subjectBacteria
dc.subjectBenzene Derivatives
dc.subjectBiodegradation, Environmental
dc.subjectChromosome Aberrations
dc.subjectMutagenicity Tests
dc.subjectMutagens
dc.subjectOnions
dc.subjectPetroleum
dc.subjectXylenes
dc.titleCellular damages in the Allium cepa test system, caused by BTEX mixture prior and after biodegradation processen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationDepartment of Biology Institute of Biosciences Universidade Estadual Paulista (UNESP), Av. 24-A, 1515, 13506-900 Rio Claro, SP
dc.description.affiliationUnespDepartment of Biology Institute of Biosciences Universidade Estadual Paulista (UNESP), Av. 24-A, 1515, 13506-900 Rio Claro, SP
dc.identifier.doi10.1016/j.chemosphere.2011.06.056
dc.rights.accessRightsAcesso aberto
dc.identifier.scopus2-s2.0-80051857232
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Biociências, Rio Claropt
dc.identifier.file2-s2.0-80051857232.pdf
dc.relation.ispartofjcr4.427
dc.relation.ispartofsjr1,435
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