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  • Title: Comparative interaction study of soy protein isolate and three flavonoids (Chrysin, Apigenin and Luteolin) and their potential as natural preservatives.
    Author: Li M, Kong J, Chen Y, Li Y, Xuan H, Liu M, Zhang Q, Liu J.
    Journal: Food Chem; 2023 Jul 15; 414():135738. PubMed ID: 36841103.
    Abstract:
    In this work, the potential of soy protein isolate (SPI)-luteolin (Lut)/apigenin (Ap)/chrysin (Chr) complexes as natural preservatives for food and cosmetics was evaluated by comparing their interactional and functional properties with structure-activity relationship. The results of spectrometry and molecular docking indicated that the B-ring hydroxylation of flavonoids affected their binding constants with SPI, which were determined as Lut (1.45 × 106 L/mol) > Ap (2.04 × 105 L/mol) > Chr (3.81 × 104 L/mol) at 298.15 K. It demonstrated that the hydrogen bonding force played an important role in binding flavonoids to SPI. Moreover, the anti-oxidation ability, antimicrobial effect, and foaming properties were positively correlated with increase in number of hydroxyl groups on the B-ring, but the amount and type of the preservative should be adjusted aimed at the nutrition components. This study provides a theoretical basis for the use of flavonoids and SPI-flavonoid complexes as natural preservatives for food and cosmetics.
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