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Registro Completo |
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Biblioteca(s): |
Embrapa Uva e Vinho. |
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Data corrente: |
27/08/2014 |
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Data da última atualização: |
02/04/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
WELKE, J. E.; ZANUS, M. C.; LAZZAROTTO, M.; ZINI, C. A. |
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Afiliação: |
Juliane Elisa Welke; MAURO CELSO ZANUS, CNPUV; MARCELO LAZZAROTTO, CNPF; Cláudia Alcaraz Zini. |
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Título: |
Quantitative analysis of headspace volatile compounds using comprehensive two-dimensional gas chromatography and their contribution to the aroma of Chardonnay wine. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Food Research International, v. 59, p. 85-99, 2014. |
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Idioma: |
Português |
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Notas: |
DOI 10.1016/j.foodres.2014.02.002 |
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Conteúdo: |
The quantitative determination of volatile compounds of Chardonnay wines using HS-SPME-GC × GC/TOFMS along with the determination of odor activity value (OAV) and relative odor contribution (ROC) of volatiles are reported for the first time. The use of GC × GC/TOFMS for the analysis of Chardonnay wine of Serra Gaucha resulted in the tentative identification of 243 compounds, showing the superior performance of this analytical technique for this specific varietal wine, considering that the number of compounds usually separated by 1D-GC for this type of wine is lower. Furthermore, 42 compounds co-eluted in the first dimension and 34 of them were separated in the second dimension, while the others were resolved by spectral deconvolution (8), which indicates that the conventional 1D-GC/MS may result in misleading results. The calculation of OAV and ROC allowed the determination of the volatile compounds that presented the greater contribution to wine aroma. Ethyl octanoate, ethyl hexanoate, ethyl butanoate, and beta-damascenone showed the highest OAV and ROC values, although other 43 compounds showed also potential to contribute to wine aroma. Figures of merit of the developed method were: accuracies from 92.4 to 102.6%, repeatability from 1.2% to 13.4%, LOD from 0.001 ?g L?1 (ethyl isovalerate and hexanoic acid) to 2.554 ?g L?1 (ethyl 3-hydroxybutanoate), LOQ from 0.003 ?g L?1 (ethyl isovalerate and hexanoic acid) to 7.582 ?g L?1 (ethyl 3-hydroxybutanoate). |
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Palavras-Chave: |
Chardonnay; Odor activity value; Relative odor contribution. |
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Thesagro: |
Aroma; Cromatografia gasosa; Vinho. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/107375/1/Welke2014-Aroma-Chardonnay.pdf
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Marc: |
LEADER 02266naa a2200241 a 4500
001 1993557
005 2019-04-02
008 2014 bl uuuu u00u1 u #d
100 1 $aWELKE, J. E.
245 $aQuantitative analysis of headspace volatile compounds using comprehensive two-dimensional gas chromatography and their contribution to the aroma of Chardonnay wine.$h[electronic resource]
260 $c2014
500 $aDOI 10.1016/j.foodres.2014.02.002
520 $aThe quantitative determination of volatile compounds of Chardonnay wines using HS-SPME-GC × GC/TOFMS along with the determination of odor activity value (OAV) and relative odor contribution (ROC) of volatiles are reported for the first time. The use of GC × GC/TOFMS for the analysis of Chardonnay wine of Serra Gaucha resulted in the tentative identification of 243 compounds, showing the superior performance of this analytical technique for this specific varietal wine, considering that the number of compounds usually separated by 1D-GC for this type of wine is lower. Furthermore, 42 compounds co-eluted in the first dimension and 34 of them were separated in the second dimension, while the others were resolved by spectral deconvolution (8), which indicates that the conventional 1D-GC/MS may result in misleading results. The calculation of OAV and ROC allowed the determination of the volatile compounds that presented the greater contribution to wine aroma. Ethyl octanoate, ethyl hexanoate, ethyl butanoate, and beta-damascenone showed the highest OAV and ROC values, although other 43 compounds showed also potential to contribute to wine aroma. Figures of merit of the developed method were: accuracies from 92.4 to 102.6%, repeatability from 1.2% to 13.4%, LOD from 0.001 ?g L?1 (ethyl isovalerate and hexanoic acid) to 2.554 ?g L?1 (ethyl 3-hydroxybutanoate), LOQ from 0.003 ?g L?1 (ethyl isovalerate and hexanoic acid) to 7.582 ?g L?1 (ethyl 3-hydroxybutanoate).
650 $aAroma
650 $aCromatografia gasosa
650 $aVinho
653 $aChardonnay
653 $aOdor activity value
653 $aRelative odor contribution
700 1 $aZANUS, M. C.
700 1 $aLAZZAROTTO, M.
700 1 $aZINI, C. A.
773 $tFood Research International$gv. 59, p. 85-99, 2014.
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Registro original: |
Embrapa Uva e Vinho (CNPUV) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite; Embrapa Unidades Centrais. |
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Data corrente: |
11/03/2015 |
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Data da última atualização: |
12/03/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
COSTA, N. S.; HERMUCHE, P.; COBUCI, J. A.; PAIVA, S. R.; GUIMARÃES, R. F.; CARVALHO JÚNIOR, O. A.; GOMES, R. A. T.; COSTA, C. N.; McMANUS, C. M. |
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Afiliação: |
N. S. COSTA, UNB; P. HERMUCHE, UNB; JAIME ARAUJO COBUCI, UFRGS; SAMUEL REZENDE PAIVA, SRI; R. F. GUIMARÃES, UNB; O. A. CARVALHO JÚNIOR, UNB; R. A. T. GOMES, UNB; CLAUDIO NAPOLIS COSTA, CNPGL; C. M. MCMANUS, UNB. |
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Título: |
Georeferenced evaluation of genetic breeding value patterns in Brazilian Holstein cattle. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Genetics and Molecular Research, v. 13, n. 4, p. 9806-9816, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to analyze the relationship between environmental and genetic values for milk production and type traits in Holstein cattle in Brazil. The genetic value of 65,383 animals for milk production and 53,626 for type classification were available. Socioeconomic and environmental data were obtained from the Brazilian Institute of Geography and Statistics, the Food and Agriculture Organization of the United Nations, the National Aeronautics and Space Administration, and the National Institute of Meteorology. Five to six clusters were generated for each of the groups of type traits and production levels. The relationships between these traits were assessed using the STEPDISC, DISCRIM and CANDISC procedures in SAS®. Traits within the clusters behaved differently, but, in general, animals with lower genetic values were found in environments that were more stressful for animal production. These differences were mainly associated with temperature, humidity, precipitation and the Normalized Difference Vegetative Index. Genetic values for milk production showed best discrimination between different environments, while type traits showed poor discrimination, possibly because farmers mainly select for milk production. Environmental variations for genetic values in dairy cattle in Brazil should be further examined. |
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Palavras-Chave: |
Conformation; Feet and legs; Type traits; Udder. |
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Thesaurus NAL: |
environment; milk production. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/120316/1/Georeferenced-evaluation-of-genetic-....pdf
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Marc: |
LEADER 02168naa a2200289 a 4500
001 2011315
005 2015-03-12
008 2014 bl uuuu u00u1 u #d
100 1 $aCOSTA, N. S.
245 $aGeoreferenced evaluation of genetic breeding value patterns in Brazilian Holstein cattle.$h[electronic resource]
260 $c2014
520 $aThe aim of this study was to analyze the relationship between environmental and genetic values for milk production and type traits in Holstein cattle in Brazil. The genetic value of 65,383 animals for milk production and 53,626 for type classification were available. Socioeconomic and environmental data were obtained from the Brazilian Institute of Geography and Statistics, the Food and Agriculture Organization of the United Nations, the National Aeronautics and Space Administration, and the National Institute of Meteorology. Five to six clusters were generated for each of the groups of type traits and production levels. The relationships between these traits were assessed using the STEPDISC, DISCRIM and CANDISC procedures in SAS®. Traits within the clusters behaved differently, but, in general, animals with lower genetic values were found in environments that were more stressful for animal production. These differences were mainly associated with temperature, humidity, precipitation and the Normalized Difference Vegetative Index. Genetic values for milk production showed best discrimination between different environments, while type traits showed poor discrimination, possibly because farmers mainly select for milk production. Environmental variations for genetic values in dairy cattle in Brazil should be further examined.
650 $aenvironment
650 $amilk production
653 $aConformation
653 $aFeet and legs
653 $aType traits
653 $aUdder
700 1 $aHERMUCHE, P.
700 1 $aCOBUCI, J. A.
700 1 $aPAIVA, S. R.
700 1 $aGUIMARÃES, R. F.
700 1 $aCARVALHO JÚNIOR, O. A.
700 1 $aGOMES, R. A. T.
700 1 $aCOSTA, C. N.
700 1 $aMcMANUS, C. M.
773 $tGenetics and Molecular Research$gv. 13, n. 4, p. 9806-9816, 2014.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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