Unravelling the Maillard reaction network by multiresponse kinetic modelling
The Maillard reaction is an important reaction in food industry. It is responsible for the formation of colour and aroma, as well as toxic compounds as the recent discovered acrylamide. The knowledge of kinetic parameters, such as rate constants and activation energy, is necessary to predict its extent and, consequently, to optimise it.Each of the chapters presented in this thesis can be seen as a necessary step to succeed in applying multiresponse kinetic modelling in a complex reaction, such as the Maillard reaction. Based on the established network for the intermediate stage a complete kinetic model for the whole glucose/glycine Maillard reaction pathways was developed. The estimated rate constants showed no dependence on the reactants initial concentration or ratio. However, concerning pH, the reaction mechanism was highly influenced with respect to which route prevailed and to the type of products formed. For the first time consistent pH dependence was derived for the estimated rate constants. For a pH drop ≤ 1 unit, the pH dependence was well captured by a power law relation, in line with a theoretical analysis. All in all, the model seemed to perform well and was consistent with the established reaction mechanism.Multiresponse kinetic modelling has proved to be a powerful tool in unravelling complex chemical reactions such as the Maillard reaction. More than just deriving relevant kinetic parameters, multiresponse modelling gave also insight into the reaction mechanism. A main conclusion was that multireponse kinetic modelling goes beyond the Maillard reaction: it should also be applicable to other complex reactions in foods.
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Doctoral thesis biblioteca |
| Language: | English |
| Published: |
Wageningen University
|
| Subjects: | kinetics, maillard reaction, models, reaction mechanism, kinetica, maillard-reactie, modellen, reactiemechanisme, |
| Online Access: | https://research.wur.nl/en/publications/unravelling-the-maillard-reaction-network-by-multiresponse-kineti |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|