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Binding of β-lactoglobulin to three phenolics improves the stability of phenolics studied by multispectral analysis and molecular modeling.


ABSTRACT: Phenolics have been used to suppress the formation of advanced glycation end products (AGEs) in food; however, enhancing their thermostability and photostability in foods remains a key issue. Ferulic acid (FA), quercetin (QT), and vanillic acid (VA), which reduce production of AGEs, were embedded in bovine β-lactoglobulin (β-LG) and their interaction mechanism was investigated. Fluorescence experiments demonstrated that FA and QT displayed typical static quenching, while VA caused fluorescence sensitization of β-LG. Furthermore, phenolics changed the secondary structure of β-LG by inducing the transformation from α-helices to β-structures, with Van der Waals forces and hydrogen bonds as the primary underlying forces. The thermal and photostability of FA/QT/VA was significantly improved upon binding to β-LG. Furthermore, QT, FA and VA demonstrated good AGEs inhibitory abilities in BSA-fructose, BSA-MGO, arginine-MGO models. These results reveal that β-LG embedding effectively improves the thermostability and photostability of dietary phenolics in food.

SUBMITTER: Zhang S 

PROVIDER: S-EPMC9234335 | biostudies-literature |

REPOSITORIES: biostudies-literature

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