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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
06/11/1995 |
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Data da última atualização: |
06/11/1995 |
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Autoria: |
WEBER, B.; MAAS, B.; MOSANDL, A. |
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Afiliação: |
Institut fur Lebensmittelchemie, Biozentrum Johann Wolfgang Goethe-Universitat, Marie-Curie-Strasse 9 D-60493 Frankfurt/Main, Germany. |
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Título: |
Stereoisomeric flavor compounds. 72 Stereoisomeric distribution of some chiral sulfur-containing trace components of yellow passion fruits. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
Journal of Agricultural and Food Chemistry, v.43, n.9, p.2438-2441, 1995. |
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ISSN: |
0021-8561 |
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Idioma: |
Inglês |
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Conteúdo: |
The enantiomeric distribution of cis- and trans-2-methyl-4-propyl-1, 3-oxathiane and 3-mercaptohexyl acetate and butanoate in passion fruit extracts were determined by means of multidimensional gas chromatography (MDGC) using sulfur-selective detection. 4S-configured oxathianes and S-configured 3-mercaptohexyl alkanoates of high enantiomeric puritywere detected. 2,2-Dimethyl-4-propyl-1,3-oxathiane and 3-mercaptohexyl propanoate were used as internal standard components, allowing a quantification of the volatiles investigated. The trace components were found in a range from less than 0.5 to 18 ppb. the results are discussedwith regard to the biosynthesis of these volatiles. Due to the high enantiomeric purities detected, the differentiation between naturally o ccurring flavor compounds and synthetic recemates added to passion fruit products is realized conclusively. |
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Palavras-Chave: |
Chiral sulfur-containing flavor compounds; Enantioselective GC analysis; Multidimensional gas chromatography (MDGC); Sulfurselective detection; Yellow passion fruit. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01629naa a2200217 a 4500
001 1634108
005 1995-11-06
008 1995 bl uuuu u00u1 u #d
022 $a0021-8561
100 1 $aWEBER, B.
245 $aStereoisomeric flavor compounds. 72 Stereoisomeric distribution of some chiral sulfur-containing trace components of yellow passion fruits.
260 $c1995
520 $aThe enantiomeric distribution of cis- and trans-2-methyl-4-propyl-1, 3-oxathiane and 3-mercaptohexyl acetate and butanoate in passion fruit extracts were determined by means of multidimensional gas chromatography (MDGC) using sulfur-selective detection. 4S-configured oxathianes and S-configured 3-mercaptohexyl alkanoates of high enantiomeric puritywere detected. 2,2-Dimethyl-4-propyl-1,3-oxathiane and 3-mercaptohexyl propanoate were used as internal standard components, allowing a quantification of the volatiles investigated. The trace components were found in a range from less than 0.5 to 18 ppb. the results are discussedwith regard to the biosynthesis of these volatiles. Due to the high enantiomeric purities detected, the differentiation between naturally o ccurring flavor compounds and synthetic recemates added to passion fruit products is realized conclusively.
653 $aChiral sulfur-containing flavor compounds
653 $aEnantioselective GC analysis
653 $aMultidimensional gas chromatography (MDGC)
653 $aSulfurselective detection
653 $aYellow passion fruit
700 1 $aMAAS, B.
700 1 $aMOSANDL, A.
773 $tJournal of Agricultural and Food Chemistry$gv.43, n.9, p.2438-2441, 1995.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
18/02/2016 |
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Data da última atualização: |
16/11/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
OLIVEIRA, T. K. de; BRAVIN, M. P.; SILVA, D. V. da. |
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Afiliação: |
TADARIO KAMEL DE OLIVEIRA, CPAF-AC; Maísa P. Bravin, Universidade Federal do Acre; Déborah V. da Silva, Universidade Federal do Acre. |
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Título: |
Fertilizing cover of corn and Xaraés grass under no-tillage and conventional tillage with nitrogen levels in an agrosilvopastoral system in Acre State, western amazon. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
In: WORLD CONGRESS ON INTEGRATED CROP-LIVESTOCK-FOREST SYSTEMS; INTERNATIONAL SYMPOSIUM ON INTEGRATED CROP-LIVESTOCK-FOREST SYSTEMS, 3., 2015, Brasília, DF. Proceedings... Brasília, DF: Embrapa; Ufrgs, 2015. |
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Páginas: |
p. 195. |
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Idioma: |
Inglês |
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Conteúdo: |
In crop-livestock-forest systems in the Amazon region, nitrogen fertilization is highly variable. It varies according to soil type, cropping system and the use of nitrogen demanding species such as corn and Urochloa brizantha (xaraés grass). This study was carried out to evaluate the agronomic efficiency of corn and 'Xaraés' intercropping, established in no-tillage and conventional tillage, in an agrosilvopastoral system, with different levels of nitrogen fertilization. |
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Palavras-Chave: |
Acre; Adubação nitrogenada; Amazônia Ocidental; Capim Xaraés; ILPF; Integração lavoura-pecuária-floresta; Plantio convencional; Sistema agrossilvipastoril. |
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Thesagro: |
Milho; Plantio Direto. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/140779/1/25940.pdf
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Marc: |
LEADER 01505nam a2200265 a 4500
001 2037541
005 2023-11-16
008 2015 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, T. K. de
245 $aFertilizing cover of corn and Xaraés grass under no-tillage and conventional tillage with nitrogen levels in an agrosilvopastoral system in Acre State, western amazon.$h[electronic resource]
260 $aIn: WORLD CONGRESS ON INTEGRATED CROP-LIVESTOCK-FOREST SYSTEMS; INTERNATIONAL SYMPOSIUM ON INTEGRATED CROP-LIVESTOCK-FOREST SYSTEMS, 3., 2015, Brasília, DF. Proceedings... Brasília, DF: Embrapa; Ufrgs$c2015
300 $ap. 195.
520 $aIn crop-livestock-forest systems in the Amazon region, nitrogen fertilization is highly variable. It varies according to soil type, cropping system and the use of nitrogen demanding species such as corn and Urochloa brizantha (xaraés grass). This study was carried out to evaluate the agronomic efficiency of corn and 'Xaraés' intercropping, established in no-tillage and conventional tillage, in an agrosilvopastoral system, with different levels of nitrogen fertilization.
650 $aMilho
650 $aPlantio Direto
653 $aAcre
653 $aAdubação nitrogenada
653 $aAmazônia Ocidental
653 $aCapim Xaraés
653 $aILPF
653 $aIntegração lavoura-pecuária-floresta
653 $aPlantio convencional
653 $aSistema agrossilvipastoril
700 1 $aBRAVIN, M. P.
700 1 $aSILVA, D. V. da
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Registro original: |
Embrapa Acre (CPAF-AC) |
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