Evaluation of Sample Preparation Procedures for Trace Element Determination in Brazilian Propolis by Inductively Coupled Plasma Optical Emission Spectrometry and Their Discrimination According to Geographic Region
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2013 |
| Outros Autores: | , , , , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Repositório Institucional da UFBA |
| Texto Completo: | http://repositorio.ufba.br/ri/handle/ri/16511 |
Resumo: | Texto completo: acesso restrito. p. 872-880 |
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Korn, Maria das Graças AndradeGuida, Mauro Agildo BarbosaBarbosa, José Tiago PereiraTorres, Ednildo AndradeFernandes, Andréa PiresSantos, Josué Carinhanha CaldasDantas, Kelly das Graças FernandesNóbrega, Joaquim de AraújoKorn, Maria das Graças AndradeGuida, Mauro Agildo BarbosaBarbosa, José Tiago PereiraTorres, Ednildo AndradeFernandes, Andréa PiresSantos, Josué Carinhanha CaldasDantas, Kelly das Graças FernandesNóbrega, Joaquim de Araújo2014-11-05T11:59:24Z20131936-9751http://repositorio.ufba.br/ri/handle/ri/16511v. 6, n. 3Texto completo: acesso restrito. p. 872-880Propolis is a complex mixture of substances collected by honeybees from buds or exudates of plants, beeswax, and other constituents, as pollen and sugars. The main purpose of this study was to evaluate two digestion procedures for determination of major, minor, and trace elements (Ba, Ca, Cd, Cr, Co, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, and Zn) in natura propolis samples by inductively coupled plasma optical emission spectrometry (ICP OES). The first procedure studied was an open-vessel digestion using HNO3 + H2SO4 + H2O2 in a heating block and the second one was a microwave-assisted concentrated acid digestion using HNO3 + H2O2. Both digestion procedures led to similar results and quantitative recoveries. The residual carbon contents (RCCs) for propolis sample digests were 0.269 ± 0.012 % when using the first procedure with conventional heating and 0.458 ± 0.023 % by microwave-assisted closed vessel digestion, demonstrating high efficiency of both procedures. Accuracy of the results was demonstrated using a certified reference material and by comparison with a recommended official method. The t test (unpaired) at 95 % confidence level showed that there was no significant difference between determined and certified values of all analytes under investigation, except Ca concentration employing conventional procedure. The optimized microwave-assisted digestion procedure led to recoveries around 89–103 % and precision better than 5 % for most samples. The second procedure was faster, safer, and more accurate than the one based on conductive heating. Additionally, principal component analysis (PCA) was applied for checking if there was correlation between inorganic composition and source of propolis samples collected around Bahia State in the Northeast of Brazil.Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2014-11-05T11:59:23Z No. of bitstreams: 1 Maria Graças Andrade Korn.pdf: 286598 bytes, checksum: be49afc60a8d2aa6b3589114dde17fe9 (MD5)Made available in DSpace on 2014-11-05T11:59:24Z (GMT). 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| dc.title.pt_BR.fl_str_mv |
Evaluation of Sample Preparation Procedures for Trace Element Determination in Brazilian Propolis by Inductively Coupled Plasma Optical Emission Spectrometry and Their Discrimination According to Geographic Region |
| dc.title.alternative.pt_BR.fl_str_mv |
Food Analytical Methods |
| title |
Evaluation of Sample Preparation Procedures for Trace Element Determination in Brazilian Propolis by Inductively Coupled Plasma Optical Emission Spectrometry and Their Discrimination According to Geographic Region |
| spellingShingle |
Evaluation of Sample Preparation Procedures for Trace Element Determination in Brazilian Propolis by Inductively Coupled Plasma Optical Emission Spectrometry and Their Discrimination According to Geographic Region Korn, Maria das Graças Andrade Propolis Trace elements Digestion Microwave radiation ICP-OES |
| title_short |
Evaluation of Sample Preparation Procedures for Trace Element Determination in Brazilian Propolis by Inductively Coupled Plasma Optical Emission Spectrometry and Their Discrimination According to Geographic Region |
| title_full |
Evaluation of Sample Preparation Procedures for Trace Element Determination in Brazilian Propolis by Inductively Coupled Plasma Optical Emission Spectrometry and Their Discrimination According to Geographic Region |
| title_fullStr |
Evaluation of Sample Preparation Procedures for Trace Element Determination in Brazilian Propolis by Inductively Coupled Plasma Optical Emission Spectrometry and Their Discrimination According to Geographic Region |
| title_full_unstemmed |
Evaluation of Sample Preparation Procedures for Trace Element Determination in Brazilian Propolis by Inductively Coupled Plasma Optical Emission Spectrometry and Their Discrimination According to Geographic Region |
| title_sort |
Evaluation of Sample Preparation Procedures for Trace Element Determination in Brazilian Propolis by Inductively Coupled Plasma Optical Emission Spectrometry and Their Discrimination According to Geographic Region |
| author |
Korn, Maria das Graças Andrade |
| author_facet |
Korn, Maria das Graças Andrade Guida, Mauro Agildo Barbosa Barbosa, José Tiago Pereira Torres, Ednildo Andrade Fernandes, Andréa Pires Santos, Josué Carinhanha Caldas Dantas, Kelly das Graças Fernandes Nóbrega, Joaquim de Araújo |
| author_role |
author |
| author2 |
Guida, Mauro Agildo Barbosa Barbosa, José Tiago Pereira Torres, Ednildo Andrade Fernandes, Andréa Pires Santos, Josué Carinhanha Caldas Dantas, Kelly das Graças Fernandes Nóbrega, Joaquim de Araújo |
| author2_role |
author author author author author author author |
| dc.contributor.author.fl_str_mv |
Korn, Maria das Graças Andrade Guida, Mauro Agildo Barbosa Barbosa, José Tiago Pereira Torres, Ednildo Andrade Fernandes, Andréa Pires Santos, Josué Carinhanha Caldas Dantas, Kelly das Graças Fernandes Nóbrega, Joaquim de Araújo Korn, Maria das Graças Andrade Guida, Mauro Agildo Barbosa Barbosa, José Tiago Pereira Torres, Ednildo Andrade Fernandes, Andréa Pires Santos, Josué Carinhanha Caldas Dantas, Kelly das Graças Fernandes Nóbrega, Joaquim de Araújo |
| dc.subject.por.fl_str_mv |
Propolis Trace elements Digestion Microwave radiation ICP-OES |
| topic |
Propolis Trace elements Digestion Microwave radiation ICP-OES |
| description |
Texto completo: acesso restrito. p. 872-880 |
| publishDate |
2013 |
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2013 |
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2014-11-05T11:59:24Z |
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1936-9751 |
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v. 6, n. 3 |
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1936-9751 v. 6, n. 3 |
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