The effect of pH on the formation of volatile compounds produced by heating a model system containing 5-Imp and cysteine
Autor(a) principal: | |
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Data de Publicação: | 1998 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Chemical Society (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531998000300010 |
Resumo: | The identification of volatile compounds formed from the reactions of Inosine-5-Monophosphate (5-IMP) with Cysteine at three different pH (3.0; 4.5; 6.0) and 140 °C were performed using dynamic headspace analysis. The results gave over 90 volatile compounds, mainly heterocyclic compounds, including sulphur containing furans, thiophenes, thiazoles, furans, alkyl sulphides, bicyclic compounds and cyclic sulphides. The studies showed that sulphur-substituted furans, mercaptoketones and alkylfurans were formed mainly at acidic pH, while pyrazines were completely inhibited at high pH. These findings support an earleir observation that pH has a great influence on volatile compounds formed in Maillard type reactions. |
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Journal of the Brazilian Chemical Society (Online) |
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The effect of pH on the formation of volatile compounds produced by heating a model system containing 5-Imp and cysteinevolatile compoundspHcysteineinosine-5-monophosphateThe identification of volatile compounds formed from the reactions of Inosine-5-Monophosphate (5-IMP) with Cysteine at three different pH (3.0; 4.5; 6.0) and 140 °C were performed using dynamic headspace analysis. The results gave over 90 volatile compounds, mainly heterocyclic compounds, including sulphur containing furans, thiophenes, thiazoles, furans, alkyl sulphides, bicyclic compounds and cyclic sulphides. The studies showed that sulphur-substituted furans, mercaptoketones and alkylfurans were formed mainly at acidic pH, while pyrazines were completely inhibited at high pH. These findings support an earleir observation that pH has a great influence on volatile compounds formed in Maillard type reactions.Sociedade Brasileira de Química1998-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531998000300010Journal of the Brazilian Chemical Society v.9 n.3 1998reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50531998000300010info:eu-repo/semantics/openAccessMadruga,Marta SuelyMottram,Donald S.eng2002-11-06T00:00:00Zoai:scielo:S0103-50531998000300010Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2002-11-06T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
The effect of pH on the formation of volatile compounds produced by heating a model system containing 5-Imp and cysteine |
title |
The effect of pH on the formation of volatile compounds produced by heating a model system containing 5-Imp and cysteine |
spellingShingle |
The effect of pH on the formation of volatile compounds produced by heating a model system containing 5-Imp and cysteine Madruga,Marta Suely volatile compounds pH cysteine inosine-5-monophosphate |
title_short |
The effect of pH on the formation of volatile compounds produced by heating a model system containing 5-Imp and cysteine |
title_full |
The effect of pH on the formation of volatile compounds produced by heating a model system containing 5-Imp and cysteine |
title_fullStr |
The effect of pH on the formation of volatile compounds produced by heating a model system containing 5-Imp and cysteine |
title_full_unstemmed |
The effect of pH on the formation of volatile compounds produced by heating a model system containing 5-Imp and cysteine |
title_sort |
The effect of pH on the formation of volatile compounds produced by heating a model system containing 5-Imp and cysteine |
author |
Madruga,Marta Suely |
author_facet |
Madruga,Marta Suely Mottram,Donald S. |
author_role |
author |
author2 |
Mottram,Donald S. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Madruga,Marta Suely Mottram,Donald S. |
dc.subject.por.fl_str_mv |
volatile compounds pH cysteine inosine-5-monophosphate |
topic |
volatile compounds pH cysteine inosine-5-monophosphate |
description |
The identification of volatile compounds formed from the reactions of Inosine-5-Monophosphate (5-IMP) with Cysteine at three different pH (3.0; 4.5; 6.0) and 140 °C were performed using dynamic headspace analysis. The results gave over 90 volatile compounds, mainly heterocyclic compounds, including sulphur containing furans, thiophenes, thiazoles, furans, alkyl sulphides, bicyclic compounds and cyclic sulphides. The studies showed that sulphur-substituted furans, mercaptoketones and alkylfurans were formed mainly at acidic pH, while pyrazines were completely inhibited at high pH. These findings support an earleir observation that pH has a great influence on volatile compounds formed in Maillard type reactions. |
publishDate |
1998 |
dc.date.none.fl_str_mv |
1998-05-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531998000300010 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531998000300010 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50531998000300010 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Journal of the Brazilian Chemical Society v.9 n.3 1998 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
_version_ |
1750318163403210752 |