Abstract
Emulsion-based delivery systems have garnered significant attention in terms of encapsulation and delivery of the hydrophobic bioactive compounds in recent years. This study investigated the formation of walnut protein fibrils (WPF) through acid-heat treatment for varying durations. Emulsions stabilized by WPF were prepared for the codelivery of CoQ10 and ALA. The emulsifying properties and interfacial distribution characteristics of WPF were compared and the differences in the stability of the emulsions were studied. Prolonged treatment duration resulted in secondary structural alterations, including an increase in β-sheet content (from 39.42 % to 45.87 %). Fibrillation increased protein interfacial adsorption, leading to WPF stabilized emulsions with better storage stability, resilience to environmental stress fluctuations and oxidative stability. In summary, compared to unmodified walnut protein, WPF10 stabilized emulsion already significantly enhanced the bioaccessibility of CoQ10 and ALA. The potential delivery system may facilitate the incorporation of hydrophobic active substances and functional fatty acids into beverage products.
Published Version
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