Issue 27, 2019

Effect of fatty acids and triglycerides on the formation of lysine-derived advanced glycation end-products in model systems exposed to frying temperature

Abstract

Lysine-derived advanced glycation end-products (AGEs), including Nε-carboxymethyllysine (CML), Nε-carboxyethyllysine (CEL) and pyrraline, are prevalent in processed foods. The impact of lipids on AGE formation is still contentious and most of our current knowledge is based only on CML. Little is known about how lipids impact the formation of CEL and pyrraline, or their involvement in formation pathways. This study investigated the effect of lipids (fatty acids and triglycerides) on the formation of CML, CEL and pyrraline simultaneously in model systems subjected to frying temperature. The results showed the presence of the lipids promoted the formation of CML, CEL and pyrraline. The promotion effects on CML and CEL were not dependent on the unsaturation degree and addition level (50, 100 or 150 μmol) of lipid, while pyrraline formation depended on lipid type (fatty acids vs. triglycerides) and level. The concentration of CML and CEL was statistically correlated with the concentration of glyoxal (GO) and methylglyoxal (MGO), respectively. The pyrraline concentration was statistically correlated with fructoselysine concentration. These results suggested that lipids promote the formation of lysine-derived AGEs by impacting the generation of Amadori products and α-dicarbonyl compounds. This information may be useful for optimizing the formulation and processing conditions to create tastier and healthier foods.

Graphical abstract: Effect of fatty acids and triglycerides on the formation of lysine-derived advanced glycation end-products in model systems exposed to frying temperature

Supplementary files

Article information

Article type
Paper
Submitted
24 2月 2019
Accepted
06 4月 2019
First published
14 5月 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 15162-15170

Effect of fatty acids and triglycerides on the formation of lysine-derived advanced glycation end-products in model systems exposed to frying temperature

Y. Wang, H. Hu, D. J. McClements, S. Nie, M. Shen, C. Li, Y. Huang, J. Chen, M. Zeng and M. Xie, RSC Adv., 2019, 9, 15162 DOI: 10.1039/C9RA01410A

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