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Structural Characterization of Amadori Rearrangement Product of Glucosylated Nα-Acetyl-Lysine by Nuclear Magnetic Resonance Spectroscopy
Joint Authors
Li, Chuanjiang
Juárez, Manuel
Ruan, Eric Dongliang
Wang, Hui
Source
International Journal of Spectroscopy
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-04-17
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Maillard reaction is a nonenzymatic reaction between reducing sugars and free amino acid moieties, which is known as one of the most important modifications in food science.
It is essential to characterize the structure of Amadori rearrangement products (ARPs) formed in the early stage of Maillard reaction.
In the present study, the Nα-acetyl-lysine-glucose model had been successfully set up to produce ARP, Nα-acetyl-lysine-glucose.
After HPLC purification, ARP had been identified by ESI-MS with intense [M+H]+ ion at 351 m/z and the purity of ARP was confirmed to be over 90% by the relative intensity of [M+H]+ ion.
Further structural characterization of the ARP was accomplished by using nuclear magnetic resonance (NMR) spectroscopy, including 1D 1H NMR and 13C NMR, the distortionless enhancement by polarization transfer (DEPT-135) and 2D 1H-1H and 13C-1H correlation spectroscopy (COSY) and 2D nuclear overhauser enhancement spectroscopy (NOESY).
The complexity of 1D 1H NMR and 13C NMR was observed due to the presence of isomers in glucose moiety of ARP.
However, DEPT-135 and 2D NMR techniques provided more structural information to assign the 1H and 13C resonances of ARP.
2D NOESY had successfully confirmed the glycosylated site between 10-N in Nα-acetyl-lysine and 7′-C in glucose.
American Psychological Association (APA)
Li, Chuanjiang& Wang, Hui& Juárez, Manuel& Ruan, Eric Dongliang. 2014. Structural Characterization of Amadori Rearrangement Product of Glucosylated Nα-Acetyl-Lysine by Nuclear Magnetic Resonance Spectroscopy. International Journal of Spectroscopy،Vol. 2014, no. 2014, pp.1-6.
https://search.emarefa.net/detail/BIM-498181
Modern Language Association (MLA)
Li, Chuanjiang…[et al.]. Structural Characterization of Amadori Rearrangement Product of Glucosylated Nα-Acetyl-Lysine by Nuclear Magnetic Resonance Spectroscopy. International Journal of Spectroscopy No. 2014 (2014), pp.1-6.
https://search.emarefa.net/detail/BIM-498181
American Medical Association (AMA)
Li, Chuanjiang& Wang, Hui& Juárez, Manuel& Ruan, Eric Dongliang. Structural Characterization of Amadori Rearrangement Product of Glucosylated Nα-Acetyl-Lysine by Nuclear Magnetic Resonance Spectroscopy. International Journal of Spectroscopy. 2014. Vol. 2014, no. 2014, pp.1-6.
https://search.emarefa.net/detail/BIM-498181
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-498181