Journal
FOOD RESEARCH INTERNATIONAL
Volume 77, Issue -, Pages 565-571Publisher
ELSEVIER
DOI: 10.1016/j.foodres.2015.08.010
Keywords
beta-Lactoglobulin; Epigallocatechin-3-gallate; Complexes; Interaction model
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Milk proteins such as 3-lactoglobulin (beta-lg) have been shown to interact with epigallocatechin-3-gallate (EGCG), and possibly offset their degradation. However, currently no studies have taken into account other milk components such as calcium in the EGCG/beta-lg interactions. The aim of this study was to characterize the interactions between EGCG and beta-lg in a simulated milk ultrafiltrate (SMUF) with and without calcium. Different EGCG concentrations were tested in solutions containing beta-lg and made in SMUF in the presence or absence of calcium. Particle size and zeta potential, as well as other measurements were performed on all solutions. Results showed an important increase in particle size and charge when beta-lg was in the presence of EGCG. Particle charge grew significantly more negatively in the absence of calcium. It was demonstrated for the first time, to the best of our knowledge, that the presence of calcium greatly impacts the EGCG/beta-lg interactions. (C) 2015 Elsevier Ltd. All rights reserved.
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