Espectrometria de massas por probe electrospray ionization (PESI-MS) com polímero molecularmente impresso (MIP) para determinação de ésteres de forbol em folhas de Jatropha curcas
Ano de defesa: | 2018 |
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Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Goiás
|
Programa de Pós-Graduação: |
Programa de Pós-graduação em Química (IQ)
|
Departamento: |
Instituto de Química - IQ (RG)
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.bc.ufg.br/tede/handle/tede/8813 |
Resumo: | Jatropha curcas L. is a euphorbiaceous oilseed plant considered toxic to humans and animals due to the presence of phorbol esters (PEs). Traditionally, the detection of these toxic compounds has been done in J. curcas seeds and derivates via chromatographic separation methods such as HPLC-UV and HPLC-MS. Although efficient, these techniques are laborious and require high time and solvent consumption, thus it would be interesting the development of new analytical methods to determine these compounds with more practicality. Probe electrospray ionization is frequently used in ambient mass spectrometry allowing analysis with minimum sample preparation. However, for complex samples analysis, this technique presents low sensitivity and ionization suppression. In this study, a molecularly imprinted polymer-coated probe electrospray ionization mass spectrometry (MIPCPESI-MS) method was developed for determination of phorbol esters in methanolic extracts of Jatropha curcas leaves with direct extraction form the ionization source. The synthesized molecularly imprinted polymer (MIP) proved to be adequate for extraction of the PEs in methanolic extracts of J. curcas leaves with better performance as extraction phase in comparison with the non-imprinted polymer (NIP). The MIPCPESI method allowed detection of phorbol 12,13-diacetate (PDA) and other three PEs metabolite ions from Jatropha leaves with minimal sample preparation, and with higher signal intensities compared to analysis with conventional PESI. For the PDA, calibration curve exhibited linearity with R2 > 0.99, LOD and LOQ in µg.mL-1 range, precision and accuracy values, respectively, between 4.06 to 13.49% and -1.60 to -15.26 %. Finally, MIPCPESI was employed for PDA quantification in methanolic extracts of six different J. curcas leaves genotypes resulting in concentrations ranging from 222.19 ± 23.55 to 528.23 ± 19.72 µg.g-1 for toxic samples. |
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Vaz, Boniek Gontijohttp://lattes.cnpq.br/7814534710550639Vaz, Boniek GontijoTerezan, Ana PaulaKato, Lucíliahttp://lattes.cnpq.br/0226493098445253Silva, Lidya Cardozo da2018-08-20T13:38:04Z2018-07-20SILVA, L. C. Espectrometria de massas por probe electrospray ionization (PESI-MS) com polímero molecularmente impresso (MIP) para determinação de ésteres de forbol em folhas de Jatropha curcas. 2018. 45 f. Dissertação (Mestrado em Química) - Universidade Federal de Goiás, Goiânia, 2018.http://repositorio.bc.ufg.br/tede/handle/tede/8813Jatropha curcas L. is a euphorbiaceous oilseed plant considered toxic to humans and animals due to the presence of phorbol esters (PEs). Traditionally, the detection of these toxic compounds has been done in J. curcas seeds and derivates via chromatographic separation methods such as HPLC-UV and HPLC-MS. Although efficient, these techniques are laborious and require high time and solvent consumption, thus it would be interesting the development of new analytical methods to determine these compounds with more practicality. Probe electrospray ionization is frequently used in ambient mass spectrometry allowing analysis with minimum sample preparation. However, for complex samples analysis, this technique presents low sensitivity and ionization suppression. In this study, a molecularly imprinted polymer-coated probe electrospray ionization mass spectrometry (MIPCPESI-MS) method was developed for determination of phorbol esters in methanolic extracts of Jatropha curcas leaves with direct extraction form the ionization source. The synthesized molecularly imprinted polymer (MIP) proved to be adequate for extraction of the PEs in methanolic extracts of J. curcas leaves with better performance as extraction phase in comparison with the non-imprinted polymer (NIP). The MIPCPESI method allowed detection of phorbol 12,13-diacetate (PDA) and other three PEs metabolite ions from Jatropha leaves with minimal sample preparation, and with higher signal intensities compared to analysis with conventional PESI. For the PDA, calibration curve exhibited linearity with R2 > 0.99, LOD and LOQ in µg.mL-1 range, precision and accuracy values, respectively, between 4.06 to 13.49% and -1.60 to -15.26 %. Finally, MIPCPESI was employed for PDA quantification in methanolic extracts of six different J. curcas leaves genotypes resulting in concentrations ranging from 222.19 ± 23.55 to 528.23 ± 19.72 µg.g-1 for toxic samples.A Jatropha curcas L. é uma oleaginosa euforbiácea considerada tóxica para humanos e animais devido à presença de ésteres de forbol (PEs). Tradicionalmente, a detecção destes compostos tóxicos tem sido feita em tortas e sementes de J. curcas por meio do uso de técnicas de separação cromatográfica como HPLC-UV e HPLC-MS que apesar de eficientes são laboriosas e requerem alto consumo de tempo e solventes. Dessa forma, seria interessante o desenvolvimento de novas técnicas analíticas para determinação desses compostos com maior praticidade. Probe electrosrpay ionization (PESI) é uma das técnicas de ionização utilizadas na espectrometria de massas ambiente que permite análises rápidas com mínimo preparo de amostras. No entanto, para análise de amostras complexas essa técnica apresenta baixa sensibilidade e supressão iônica. Neste estudo, foi desenvolvido um método de análise por espectrometria de massas por Probe electrospray revestido com polímero molecularmente impresso (MIPCPESI-MS) para determinação de ésteres de forbol em extratos metanólicos de folhas de Jatropha curcas com extração direta da fonte de ionização. O polímero molecularmente impresso (MIP) sintetizado mostrou-se adequado para extração de PEs em extratos metanólicos de folhas de J. curcas tendo melhor desempenho como fase extratora quando comparado ao polímero não molecularmente impresso (NIP). O método MIPCPESI-MS possibilitou a detecção do forbol 12,13-diacetato (PDA) e de outros três íons metabólitos presentes nas folhas de J. curcas com mínimo preparo de amostras e com maior intensidade de sinais quando comparado às análises com PESI convencional. Para o PDA, a curva de calibração apresentou linearidade com R2 > 0.99, LOD e LOQ na faixa de µg.mL-1, valores de precisão entre 4.06 e 13.49 % e exatidão entre -1.60 e -15.26 %. Posteriormente, o método MIPCPESI foi empregado na quantificação de PDA em seis extratos metanólicos de diferentes genótipos de folhas de J. curcas resultando em valores concentrações entre 222.19 ± 23.55 a 528.23 ± 19.72 µg.g-1 nas amostras tóxicas.Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2018-08-20T13:36:48Z No. of bitstreams: 2 Dissertação - Lidya Cardozo da Silva - 2018.pdf: 2382834 bytes, checksum: e5a79619d923d442540c5bf0549318bd (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2018-08-20T13:38:04Z (GMT) No. of bitstreams: 2 Dissertação - Lidya Cardozo da Silva - 2018.pdf: 2382834 bytes, checksum: e5a79619d923d442540c5bf0549318bd (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)Made available in DSpace on 2018-08-20T13:38:04Z (GMT). No. of bitstreams: 2 Dissertação - Lidya Cardozo da Silva - 2018.pdf: 2382834 bytes, checksum: e5a79619d923d442540c5bf0549318bd (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2018-07-20Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESapplication/pdfporUniversidade Federal de GoiásPrograma de Pós-graduação em Química (IQ)UFGBrasilInstituto de Química - IQ (RG)http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessEspectrometria de massas ambienteProbe electrospray ionizationPolímero molecularmente impressoJatropha curcasÉsteres de forbolAmbient mass spectrometryProbe electrospray ionizationMolecularly imprinted polymerJatropha curcasPhorbol estersCIENCIAS EXATAS E DA TERRA::QUIMICAEspectrometria de massas por probe electrospray ionization (PESI-MS) com polímero molecularmente impresso (MIP) para determinação de ésteres de forbol em folhas de Jatropha curcasMolecularly imprinted polymer-coated probe electrospray ionization mass spectrometry (MIPCPESI-MS) for determination of phorbol esters in Jatropha curcas leavesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis663693921325415158600600600600782606674374119727815717003253031171952075167498588264571reponame:Repositório Institucional da UFGinstname:Universidade Federal de Goiás (UFG)instacron:UFGLICENSElicense.txtlicense.txttext/plain; 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dc.title.eng.fl_str_mv |
Espectrometria de massas por probe electrospray ionization (PESI-MS) com polímero molecularmente impresso (MIP) para determinação de ésteres de forbol em folhas de Jatropha curcas |
dc.title.alternative.eng.fl_str_mv |
Molecularly imprinted polymer-coated probe electrospray ionization mass spectrometry (MIPCPESI-MS) for determination of phorbol esters in Jatropha curcas leaves |
title |
Espectrometria de massas por probe electrospray ionization (PESI-MS) com polímero molecularmente impresso (MIP) para determinação de ésteres de forbol em folhas de Jatropha curcas |
spellingShingle |
Espectrometria de massas por probe electrospray ionization (PESI-MS) com polímero molecularmente impresso (MIP) para determinação de ésteres de forbol em folhas de Jatropha curcas Silva, Lidya Cardozo da Espectrometria de massas ambiente Probe electrospray ionization Polímero molecularmente impresso Jatropha curcas Ésteres de forbol Ambient mass spectrometry Probe electrospray ionization Molecularly imprinted polymer Jatropha curcas Phorbol esters CIENCIAS EXATAS E DA TERRA::QUIMICA |
title_short |
Espectrometria de massas por probe electrospray ionization (PESI-MS) com polímero molecularmente impresso (MIP) para determinação de ésteres de forbol em folhas de Jatropha curcas |
title_full |
Espectrometria de massas por probe electrospray ionization (PESI-MS) com polímero molecularmente impresso (MIP) para determinação de ésteres de forbol em folhas de Jatropha curcas |
title_fullStr |
Espectrometria de massas por probe electrospray ionization (PESI-MS) com polímero molecularmente impresso (MIP) para determinação de ésteres de forbol em folhas de Jatropha curcas |
title_full_unstemmed |
Espectrometria de massas por probe electrospray ionization (PESI-MS) com polímero molecularmente impresso (MIP) para determinação de ésteres de forbol em folhas de Jatropha curcas |
title_sort |
Espectrometria de massas por probe electrospray ionization (PESI-MS) com polímero molecularmente impresso (MIP) para determinação de ésteres de forbol em folhas de Jatropha curcas |
author |
Silva, Lidya Cardozo da |
author_facet |
Silva, Lidya Cardozo da |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Vaz, Boniek Gontijo |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/7814534710550639 |
dc.contributor.referee1.fl_str_mv |
Vaz, Boniek Gontijo |
dc.contributor.referee2.fl_str_mv |
Terezan, Ana Paula |
dc.contributor.referee3.fl_str_mv |
Kato, Lucília |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/0226493098445253 |
dc.contributor.author.fl_str_mv |
Silva, Lidya Cardozo da |
contributor_str_mv |
Vaz, Boniek Gontijo Vaz, Boniek Gontijo Terezan, Ana Paula Kato, Lucília |
dc.subject.por.fl_str_mv |
Espectrometria de massas ambiente Probe electrospray ionization Polímero molecularmente impresso Jatropha curcas Ésteres de forbol |
topic |
Espectrometria de massas ambiente Probe electrospray ionization Polímero molecularmente impresso Jatropha curcas Ésteres de forbol Ambient mass spectrometry Probe electrospray ionization Molecularly imprinted polymer Jatropha curcas Phorbol esters CIENCIAS EXATAS E DA TERRA::QUIMICA |
dc.subject.eng.fl_str_mv |
Ambient mass spectrometry Probe electrospray ionization Molecularly imprinted polymer Jatropha curcas Phorbol esters |
dc.subject.cnpq.fl_str_mv |
CIENCIAS EXATAS E DA TERRA::QUIMICA |
description |
Jatropha curcas L. is a euphorbiaceous oilseed plant considered toxic to humans and animals due to the presence of phorbol esters (PEs). Traditionally, the detection of these toxic compounds has been done in J. curcas seeds and derivates via chromatographic separation methods such as HPLC-UV and HPLC-MS. Although efficient, these techniques are laborious and require high time and solvent consumption, thus it would be interesting the development of new analytical methods to determine these compounds with more practicality. Probe electrospray ionization is frequently used in ambient mass spectrometry allowing analysis with minimum sample preparation. However, for complex samples analysis, this technique presents low sensitivity and ionization suppression. In this study, a molecularly imprinted polymer-coated probe electrospray ionization mass spectrometry (MIPCPESI-MS) method was developed for determination of phorbol esters in methanolic extracts of Jatropha curcas leaves with direct extraction form the ionization source. The synthesized molecularly imprinted polymer (MIP) proved to be adequate for extraction of the PEs in methanolic extracts of J. curcas leaves with better performance as extraction phase in comparison with the non-imprinted polymer (NIP). The MIPCPESI method allowed detection of phorbol 12,13-diacetate (PDA) and other three PEs metabolite ions from Jatropha leaves with minimal sample preparation, and with higher signal intensities compared to analysis with conventional PESI. For the PDA, calibration curve exhibited linearity with R2 > 0.99, LOD and LOQ in µg.mL-1 range, precision and accuracy values, respectively, between 4.06 to 13.49% and -1.60 to -15.26 %. Finally, MIPCPESI was employed for PDA quantification in methanolic extracts of six different J. curcas leaves genotypes resulting in concentrations ranging from 222.19 ± 23.55 to 528.23 ± 19.72 µg.g-1 for toxic samples. |
publishDate |
2018 |
dc.date.accessioned.fl_str_mv |
2018-08-20T13:38:04Z |
dc.date.issued.fl_str_mv |
2018-07-20 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
SILVA, L. C. Espectrometria de massas por probe electrospray ionization (PESI-MS) com polímero molecularmente impresso (MIP) para determinação de ésteres de forbol em folhas de Jatropha curcas. 2018. 45 f. Dissertação (Mestrado em Química) - Universidade Federal de Goiás, Goiânia, 2018. |
dc.identifier.uri.fl_str_mv |
http://repositorio.bc.ufg.br/tede/handle/tede/8813 |
identifier_str_mv |
SILVA, L. C. Espectrometria de massas por probe electrospray ionization (PESI-MS) com polímero molecularmente impresso (MIP) para determinação de ésteres de forbol em folhas de Jatropha curcas. 2018. 45 f. Dissertação (Mestrado em Química) - Universidade Federal de Goiás, Goiânia, 2018. |
url |
http://repositorio.bc.ufg.br/tede/handle/tede/8813 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.program.fl_str_mv |
663693921325415158 |
dc.relation.confidence.fl_str_mv |
600 600 600 600 |
dc.relation.department.fl_str_mv |
7826066743741197278 |
dc.relation.cnpq.fl_str_mv |
1571700325303117195 |
dc.relation.sponsorship.fl_str_mv |
2075167498588264571 |
dc.rights.driver.fl_str_mv |
http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.publisher.program.fl_str_mv |
Programa de Pós-graduação em Química (IQ) |
dc.publisher.initials.fl_str_mv |
UFG |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Instituto de Química - IQ (RG) |
publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFG instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Repositório Institucional da UFG |
collection |
Repositório Institucional da UFG |
bitstream.url.fl_str_mv |
http://repositorio.bc.ufg.br/tede/bitstreams/159ca9d2-84da-4222-8c9f-bd59714d381d/download http://repositorio.bc.ufg.br/tede/bitstreams/f44c172a-b247-41fd-b4ce-8dce5b62e2f8/download http://repositorio.bc.ufg.br/tede/bitstreams/14dccd86-0963-4f7c-ba7b-a80dd96b4e4a/download http://repositorio.bc.ufg.br/tede/bitstreams/d672b0a4-9761-4e7e-a094-b9205f91af51/download http://repositorio.bc.ufg.br/tede/bitstreams/71cd4a97-c6c7-4bfe-89f6-d54234a012af/download |
bitstream.checksum.fl_str_mv |
bd3efa91386c1718a7f26a329fdcb468 4afdbb8c545fd630ea7db775da747b2f d41d8cd98f00b204e9800998ecf8427e d41d8cd98f00b204e9800998ecf8427e e5a79619d923d442540c5bf0549318bd |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFG - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
tasesdissertacoes.bc@ufg.br |
_version_ |
1798045001424306176 |