This study aimed to investigate theeffects of sous vide (SV), boiling (BO), and roasting (RO) on beef protein digestibility and peptide profiling in simulated gastrointestinal digestion. The results indicated that beef samples treated with SV had higher (p < 0.05) gastrointestinal digestibility (34.97%) than those treated with BO (27.59%) and RO (24.36%). Furthermore, SV (2450) resulted in more types of peptides released during gastrointestinal digestion than BO (2077) and RO (1896) and a higher proportion of 400−1200 Da peptides. The significant increase of carbonyl content, the decrease of sulfhydryl content, and the formation of covalent bonds coupled with the transformation of protein secondary structure from α-helix to β-sheet suggested that excessive protein oxidation and aggregation occurred in BO and RO samples. These changes in BO and RO samples might explain the decreased protein digestibility and peptide release in gastrointestinal digestion. Thus, SV is a promising cooking method to improve beef protein digestibility.
This research was undertaken to investigate the cooking properties, lipid oxidation, fatty acid profile, texture, and rheological behavior of fat-reduced frankfurter containing whole banana flour (WBF), pulp banana flour (BPF), and peel banana flour (BSF) obtained from unripe fruit and pre-emulsified sunflower oil. The addition of WBF, BPF and BSF in association with pre-emulsified oil lowered the cooking loss and increased the emulsion stability of the final product. These ingredients also enhanced the oxidative stability of the samples during storage (P < .05). Higher PUFA values were associated with the incorporation of pre-emulsified sunflower oil. BSF and BPF provided a more enhanced gel network structure, and subsequently retained more water molecules. WBF and BPF samples improved the sensory aspects of reduced-fat frankfurters compared to BSF (P < .05). Banana by-products, as ingredients, enable the use of vegetable oils in meat emulsion and subsequently improve the health benefits of final products by replacing up to 50% animal fat.
ARTICLE HISTORY
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.