1. Kinetic study on the generation of furosine and pyrraline in a Maillard reaction model system of d-glucose and l-lysine.
- Author
-
Yu H, Zhong Q, Xie Y, Guo Y, Cheng Y, and Yao W
- Subjects
- Deoxyglucose analogs & derivatives, Deoxyglucose chemistry, Kinetics, Norleucine chemistry, Pyruvaldehyde chemistry, Glucose chemistry, Lysine analogs & derivatives, Lysine chemistry, Maillard Reaction, Norleucine analogs & derivatives, Pyrroles chemistry
- Abstract
A kinetic model for Maillard reaction (MR) model system of d-glucose and l-lysine was established; activation energy (Ea) of each step was calculated. Potential generation pathways of furosine and pyrraline were a combination of either 3-deoxyglucosone (3-DG) or methylglyoxal (MG) with l-lysine. Ea value for furosine generated through 3-DG pathway was 81.70 ± 14.01 kJ mol
-1 , which was significantly higher than that through MG pathway (52.08 ± 4.48 kJ mol-1 ). As for pyrraline, Ea for the 3-DG pathway (53.45 ± 4.02 kJ mol-1 ) was significantly lower than that through the MG pathway (110.22 ± 18.77 kJ mol-1 ). Results of the kinetic study indicated that furosine was preferred to be generated through the MG pathway since MG is more likely to react with each other and form a furan ring as a precursor of furosine. Pyrraline was more easily to be generated from the 3-DG pathway through cyclization of 1,4-dicarbonyl compounds to pyrrole., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2020 Elsevier Ltd. All rights reserved.)- Published
- 2020
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