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dc.contributor.authorZamora, Rosario-
dc.contributor.authorDelgado, Rosa M.-
dc.contributor.authorHidalgo, Francisco J.-
dc.identifier.citationMolecular Nutrition and Food Research 53(12): 1512-1520 (2009)es_ES
dc.identifier.otherPMID: 19746374-
dc.descriptionSpecial Issue: Special: The Maillard Reaction in Food and Medicine Current Status and Future Aspectses_ES
dc.description.abstractCarbonyl compounds have been shown to play a major role in the conversion of asparagine into acrylamide. However, it is unclear at this point if its role is only restricted to the decarboxylation of the amino acid or if carbonyl compounds also play a role in the deamination reaction of the decarboxylated intermediates 3-aminopropionamide and 3-(alkylamino)propionamides. This study describes the deamination reaction of 3-aminopropionamide and 3-(alkylamino)propionamides (benzyl, phenylethyl, butyl, and octyl) in model systems and in the presence, or not, of different carbonyl compounds (alkadienals, alkenals, and alkanals). All these reactions were mainly produced at almost neutral or basic pH values. In addition, the reaction yields and the activation energies not only depended on the type of aminopropionamide involved but also on the water activity (aw) and in the presence, or not, of carbonyl compounds. However, there was not a clear correlation among the activation energies calculated for the different deamination reactions and the yields of acrylamide obtained; therefore, suggesting the existence of diverse pathways by which 3-aminopropionamide and 3-(alkylamino)propionamides are converted into acrylamide. In addition, these reactions are also competing with other carbonyl–amine reactions when carbonyl compounds are present. All these results suggest that the type of the intermediate aminopropionamide involved is going to play a major role in both the amount of acrylamide produced and the conditions required for its formation. On the other hand, the role of carbonyl compounds in the acrylamide produced, but not in the activation energy of the reactions implicated, seems to be more limited than either the type of amine or the aw. A detailed analysis of the type of the intermediate aminopropionamide formed in foods may help to define strategies for mitigating the formation of this food toxicant.es_ES
dc.description.sponsorshipThis study was supported in part by the European Union (FEDER funds), the Junta de Andalucía (Project P07-AGR-2846), and the Plan Nacional de I + D of the Ministerio de Educación y Ciencia of Spain (Project AGL2006-01092).es_ES
dc.subjectCarbonyl–amine reactionses_ES
dc.subjectMaillard reactiones_ES
dc.titleConversion of 3-aminopropionamide and 3-alkylaminopropionamides into acrylamide in model systemses_ES
dc.description.peerreviewedPeer reviewedes_ES
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