1990
DOI: 10.1007/bf01192968
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Formation of acids, lactones and esters through the Maillard reaction

Abstract: From a glucose/glycine reaction mixture acids, esters and lactones were isolated and identified. Sugar degradation products could also be determined as benzimidazole derivatives after reaction with o-phenylenediamine. Results derived from model systems suggested possible reaction pathways leading to some of the isolated substances. A lactic acid ester is formed as a product of an unstable beta-pyranone intermediate. A 3-deoxyhexosone serves as a precursor of two furanolactones.

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Cited by 42 publications
(26 citation statements)
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“…As is well known, the decrease in pH observed in the samples in which the Maillard reaction takes place (A and B) can be attributed to the reaction of amines to form compounds of lower basicity and to the degradation of glucose to acids. 26,27 In fact, in these model systems the glucose consumption follows the same behaviour as the pH decrease (Fig 3).…”
Section: Resultsmentioning
confidence: 85%
See 1 more Smart Citation
“…As is well known, the decrease in pH observed in the samples in which the Maillard reaction takes place (A and B) can be attributed to the reaction of amines to form compounds of lower basicity and to the degradation of glucose to acids. 26,27 In fact, in these model systems the glucose consumption follows the same behaviour as the pH decrease (Fig 3).…”
Section: Resultsmentioning
confidence: 85%
“…In the case of absorbance, colour a* and peroxide values and antioxidant activity the reaction kinetic constants are signi®cantly different also from a statistical point of view. According to the literature, 21,26 zero order was more in keeping with changes in optical density and peroxide values, headspace CO 2 concentration and antioxidant activity, while for colour, glucose loss and pH the ®rst-order determination coef®cients were slightly higher than the zeroorder ones.…”
Section: Resultsmentioning
confidence: 87%
“…O ácido acético e o ácido propiônico, por exemplo, já foram detectados após a pirólise da 1-desóxi-1-L-alanino-Dfrutose 76 . Os compostos de "Amadori" são formados quando uma glicosilamina é convertida em uma 1-amino-1-desóxi-2-cetose, através de um rearranjo de "Amadori" 50,77 . Essas glicosilaminas seriam os produtos iniciais da reação entre um açúcar redutor (formado pela decomposição da sacarose) com uma amina primária 50,77 .…”
Section: áCidos Carboxílicosunclassified
“…Os compostos de "Amadori" são formados quando uma glicosilamina é convertida em uma 1-amino-1-desóxi-2-cetose, através de um rearranjo de "Amadori" 50,77 . Essas glicosilaminas seriam os produtos iniciais da reação entre um açúcar redutor (formado pela decomposição da sacarose) com uma amina primária 50,77 . Segundo dados da literatura, os ácidos mais voláteis (com 3 a 10 átomos de carbono) também podem ter sua origem relacionada à presença de lipídios no café 70 .…”
Section: áCidos Carboxílicosunclassified
“…Acids account for approximately 11% of the weight of green coffee, 6% of that of roasted coffee, and 16-21% of that of final preparations [2]. Hydrolysis of esters and occurrence of the Maillard reaction during manufacturing are likely causes of increased acidity [13,14,15,16,17].…”
Section: Introductionmentioning
confidence: 99%