title: Kinetic modeling of the generation of 2- and 3-methylbutanal in a heated extract of beef liver.
abstract: Quantitative control of aroma generation during the Maillard reaction presents great scientific and industrial interest. Although there have been many studies conducted in simplified model systems, the results are difficult to apply to complex food systems, where the presence of other components can have a significant impact. In this work, an aqueous extract of defatted beef liver was chosen as a simplified food matrix for studying the kinetics of the Maillard reaction. Aliquots of the extract were heated under different time and temperature conditions and analyzed for sugars, amino acids, and methylbutanals, which are important Maillard-derived aroma compounds formed in cooked meat. Multiresponse kinetic modeling, based on a simplified mechanistic pathway, gave a good fit with the experimental data, but only when additional steps were introduced to take into account the interactions of glucose and glucose-derived intermediates with protein and other amino compounds. This emphasizes the significant role of the food matrix in controlling the Maillard reaction.
authors.affiliation: Department of Food Biosciences, University of Reading, Whiteknights, Reading RG6 6AP, United Kingdom.
authors.forename: Dimitrios P
authors.initials: DP
authors.lastname: Balagiannis
authors.forename: Jane K
authors.initials: JK
authors.lastname: Parker
authors.forename: D Leo
authors.initials: DL
authors.lastname: Pyle
authors.forename: Neil
authors.initials: N
authors.lastname: Desforges
authors.forename: Bronislaw L
authors.initials: BL
authors.lastname: Wedzicha
authors.forename: Donald S
authors.initials: DS
authors.lastname: Mottram
mesh_terms: D000447:Aldehydes / Q000737:chemistry*; D000818:Animals; D002417:Cattle; D005511:Food Handling; D006358:Hot Temperature; D007700:Kinetics; D008099:Liver / Q000737:chemistry*; D008460:Meat / Q000032:analysis*; D008956:Models, Chemical; D014835:Volatilization
chemical_list: D000447:Aldehydes; C547093:2-methylbutanal; C032251:isovalerylaldehyde