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Registro Completo |
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Biblioteca(s): |
Embrapa Roraima. |
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Data corrente: |
17/03/2008 |
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Data da última atualização: |
01/03/2012 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
BENDAHAN, A. B.; MOURÃO JUNIOR, M.; VEIGAS, J. B. da. |
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Afiliação: |
Amaury Burlamaqui Bendahan, CPAF-RR; Moisés Mourão Júnior, CPAF-RR; Jonas Bastos da Veigas, CPATU. |
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Título: |
Evidenciando propriedades do solo em pastagens por meio de ordenação multivariada e envoltório convexo (convex hull) |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In. REUNIÃO ANUAL DA REGIÃO BRASILEIRA DA SOCIEDADE INTERNACIONAL DE BIOMETRIA, 52.; SIMPÓSIO DE ESTATÍSTICA APLICADA À EXPERIMENTAÇÃO AGRONÔMICA, 12., Santa Maria, RS, 2007. |
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Idioma: |
Português |
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Palavras-Chave: |
Agrupamento 2D; Algoritmo geométrico; Convex hull. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00675naa a2200169 a 4500
001 1691679
005 2012-03-01
008 2007 bl --- 0-- u #d
100 1 $aBENDAHAN, A. B.
245 $aEvidenciando propriedades do solo em pastagens por meio de ordenação multivariada e envoltório convexo (convex hull)
260 $c2007
653 $aAgrupamento 2D
653 $aAlgoritmo geométrico
653 $aConvex hull
700 1 $aMOURÃO JUNIOR, M.
700 1 $aVEIGAS, J. B. da
773 $tIn. REUNIÃO ANUAL DA REGIÃO BRASILEIRA DA SOCIEDADE INTERNACIONAL DE BIOMETRIA, 52.; SIMPÓSIO DE ESTATÍSTICA APLICADA À EXPERIMENTAÇÃO AGRONÔMICA, 12., Santa Maria, RS, 2007.
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Registro original: |
Embrapa Roraima (CPAF-RR) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria de Alimentos. |
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Data corrente: |
25/06/2018 |
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Data da última atualização: |
28/08/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 4 |
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Autoria: |
MARTINS, V. de C.; GODOY, R. L. de O.; GOVÊA, A. C. M. S.; SANTIAGO, M. C. P. de A.; BORGUINI, R. G.; BRAGA, E. C. de O.; PACHECO, S.; NASCIMENTO, L. da S. de M. do. |
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Afiliação: |
Víctor de Carvalho Martins, UFRJ; RONOEL LUIZ DE OLIVEIRA GODOY, CTAA; Ana Cristina Miranda Senna Gouvêa, CTAA; MANUELA CRISTINA P DE A SANTIAGO, CTAA; RENATA GALHARDO BORGUINI, CTAA; Elaine Cristina de Oliveira Braga, UFRJ; SIDNEY PACHECO, CTAA; LUZIMAR DA SILVA DE M DO NASCIMENTO, CTAA. |
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Título: |
Fraud investigation in commercial coffee by chromatography. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Food Quality and Safety, Oxford, v. 20, p 1-13, 2018. |
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DOI: |
https://doi.org/10.1093/fqsafe/fyy017 |
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Idioma: |
Inglês |
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Notas: |
Review. |
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Conteúdo: |
Coffee is currently the second largest commodity on the world market today, and there is great concern about the quality of the beans exported from producer countries to Europe and USA. Practices such as using blends of different species and adding low-cost raw materials, such as chicory, corn, and soybean, impair the sensory and functional characteristics of the drink made from roasted and ground coffee beans. There is a need to adopt more efficient analytical methods than the microscopy technique currently used. The first chromatographic method used to determine fraud was reported in 1958. This method used paper chromatography to differentiate between coffee and chicory based on the free reducing sugars. As of the 1980s, different methods involving high-performance liquid chromatography and gas chromatography were developed in order to demonstrate geographic authenticity, distinction between species, occurrence of adulteration, and the presence of defective beans by determining the monosaccharides, oligosaccharides, tocopherols, fatty acids, volatiles, diterpenes, sterols, and phenolic substances, among others. As far as the authors know, there are no papers published in the literature that have compiled such an extensive set of information about these chromatographic methods as here. Over the last 2 years, there has been a trend to develop analytical methods for ultra-performance liquid chromatography coupled with tandem mass spectrometry to confirm fraud in coffee, due to high sensitivity and selectivity. MenosCoffee is currently the second largest commodity on the world market today, and there is great concern about the quality of the beans exported from producer countries to Europe and USA. Practices such as using blends of different species and adding low-cost raw materials, such as chicory, corn, and soybean, impair the sensory and functional characteristics of the drink made from roasted and ground coffee beans. There is a need to adopt more efficient analytical methods than the microscopy technique currently used. The first chromatographic method used to determine fraud was reported in 1958. This method used paper chromatography to differentiate between coffee and chicory based on the free reducing sugars. As of the 1980s, different methods involving high-performance liquid chromatography and gas chromatography were developed in order to demonstrate geographic authenticity, distinction between species, occurrence of adulteration, and the presence of defective beans by determining the monosaccharides, oligosaccharides, tocopherols, fatty acids, volatiles, diterpenes, sterols, and phenolic substances, among others. As far as the authors know, there are no papers published in the literature that have compiled such an extensive set of information about these chromatographic methods as here. Over the last 2 years, there has been a trend to develop analytical methods for ultra-performance liquid chromatography coupled with tandem mass spectrometry to confirm fraud in coffee, due t... Mostrar Tudo |
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Thesagro: |
Adulteração; Café; Carboidrato; Cromatografia; Cromatografia Gasosa; Grão; Método de Análise. |
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Thesaurus NAL: |
Adulterated products; Analytical methods; Carbohydrates; Coffee (beverage); Coffee beans; Gas chromatography-mass spectrometry; Ultra-performance liquid chromatography; Volatile compounds. |
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Categoria do assunto: |
Q Alimentos e Nutrição Humana |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/178931/1/fyy017-1-versao-final.pdf
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Marc: |
LEADER 02747naa a2200409 a 4500
001 2092721
005 2023-08-28
008 2018 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1093/fqsafe/fyy017$2DOI
100 1 $aMARTINS, V. de C.
245 $aFraud investigation in commercial coffee by chromatography.$h[electronic resource]
260 $c2018
500 $aReview.
520 $aCoffee is currently the second largest commodity on the world market today, and there is great concern about the quality of the beans exported from producer countries to Europe and USA. Practices such as using blends of different species and adding low-cost raw materials, such as chicory, corn, and soybean, impair the sensory and functional characteristics of the drink made from roasted and ground coffee beans. There is a need to adopt more efficient analytical methods than the microscopy technique currently used. The first chromatographic method used to determine fraud was reported in 1958. This method used paper chromatography to differentiate between coffee and chicory based on the free reducing sugars. As of the 1980s, different methods involving high-performance liquid chromatography and gas chromatography were developed in order to demonstrate geographic authenticity, distinction between species, occurrence of adulteration, and the presence of defective beans by determining the monosaccharides, oligosaccharides, tocopherols, fatty acids, volatiles, diterpenes, sterols, and phenolic substances, among others. As far as the authors know, there are no papers published in the literature that have compiled such an extensive set of information about these chromatographic methods as here. Over the last 2 years, there has been a trend to develop analytical methods for ultra-performance liquid chromatography coupled with tandem mass spectrometry to confirm fraud in coffee, due to high sensitivity and selectivity.
650 $aAdulterated products
650 $aAnalytical methods
650 $aCarbohydrates
650 $aCoffee (beverage)
650 $aCoffee beans
650 $aGas chromatography-mass spectrometry
650 $aUltra-performance liquid chromatography
650 $aVolatile compounds
650 $aAdulteração
650 $aCafé
650 $aCarboidrato
650 $aCromatografia
650 $aCromatografia Gasosa
650 $aGrão
650 $aMétodo de Análise
700 1 $aGODOY, R. L. de O.
700 1 $aGOVÊA, A. C. M. S.
700 1 $aSANTIAGO, M. C. P. de A.
700 1 $aBORGUINI, R. G.
700 1 $aBRAGA, E. C. de O.
700 1 $aPACHECO, S.
700 1 $aNASCIMENTO, L. da S. de M. do
773 $tFood Quality and Safety, Oxford$gv. 20, p 1-13, 2018.
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Embrapa Agroindústria de Alimentos (CTAA) |
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