LAUSR

BACKGROUND This study aims to investigate the effects of large yellow croacker (Larimichthys crocea) roe protein hydrolysate (LYCPH)-polyphenol (catechin [CA], gallic acid [GA] and tannic acid [TA]) conjugates on the oxidative stability of fish oil in oleogels system. RESULTS Scanning electron microscopy and Fourier transform infrared spectroscopy suggested that the LYCPH-polyphenol conjugates were nearly spherical and non-covalent and that covalent effects would co-exist between LYCPH and polyphenols. LYCPH-TA exhibited the highest ABTS scavenging, reducing capacities and emulsifying stability. Raman spectra and chemometrics revealed that LYCPH-TA loaded with oleogels had the best oxidative stability. Additionally, 32 volatile compounds were identified in fish oil by headspace gas chromatography-ion mobility spectrometry. CONCLUSION Overall, this study demonstrated that fish oil oleogels loaded with LYCPH-polyphenol conjugates could inhibit fish oil oxidation. This article is protected by copyright. All rights reserved.