Journal
FOOD CHEMISTRY
Volume 231, Issue -, Pages 175-184Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2017.03.126
Keywords
Phenolic compounds; Bread; N-epsilon-(carboxymethyl)lysine (CML); Available lysine losses; Pyrazines
Funding
- National Centre of Science, Poland [2013/09/B/NZ9/01626]
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This study had the objective of determining the antiglycation activity of phenolic compounds (PCs) ((+)-catechin, quercetin, gallic, ferulic, and caffeic acids) added to a model bread with regards to the inhibition of N-epsilon-(carboxymethyl) lysine (CML) formation. PCs were found to significantly reduce CML (31.77%-87.56%), even at the lowest concentration, with the exception of ferulic acid (FA). The strongest inhibitory effect of FA (similar to 62%) appeared when concentration was increased to 1.0 g/100 g of flour. The available lysine losses (0.00%- 90.51%) showed a significant correlation (0.853-0.990) with effectiveness of CML inhibition, except in the case of samples with FA. (+)-Catechin reduced CML levels the most, probably due to its structure-antioxidant activity relationship, its thermal stability (similar to 51% loss), and its reactivity with e-lysine side chains (similar to 40.77% loss). Although the bread supplemented with PCs contained low levels of CML, this process may adversely affect bread flavor, reducing the formation of pyrazines (1.10%-80.77%). (C) 2017 Elsevier Ltd. All rights reserved.
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