Structural Characterization of Amadori Rearrangement Product of Glucosylated Nα-Acetyl-Lysine by Nuclear Magnetic Resonance Spectroscopy

المؤلفون المشاركون

Li, Chuanjiang
Juárez, Manuel
Ruan, Eric Dongliang
Wang, Hui

المصدر

International Journal of Spectroscopy

العدد

المجلد 2014، العدد 2014 (31 ديسمبر/كانون الأول 2014)، ص ص. 1-6، 6ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2014-04-17

دولة النشر

مصر

عدد الصفحات

6

التخصصات الرئيسية

الفيزياء

الملخص 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.

نمط استشهاد جمعية علماء النفس الأمريكية (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

نمط استشهاد الجمعية الأمريكية للغات الحديثة (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

نمط استشهاد الجمعية الطبية الأمريكية (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

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-498181