RT info:eu-repo/semantics/article T1 Effect of Skin Wine Pomace and Sulfite on Protein Oxidation in Beef Patties During High Oxygen Atmosphere Storage A1 García Lomillo, Javier A1 González San José, Mª Luisa A1 Skibsted, Leif H. A1 Jongberg, Sisse K1 Beef patties K1 Protein oxidation K1 Protein radicals K1 Sulfite K1 Wine pomace K1 Protein cross-linking K1 Food K1 Chemical engineering K1 Alimentos K1 Ingeniería química AB Meat storage in high oxygen atmosphere has beenreported to induce protein oxidation reactions decreasing meatquality. The incorporation of antioxidants has been proposedto reduce the extent of these reactions. In this study, the abilityof red and white skin wine pomaces as well as sulfites toinhibit protein oxidation were tested in beef patties stored forup to 15 days at 4 °C in a high oxygen atmosphere (70 % O2and 30 % CO2). SO2 (300 ppm) effectively protected againstprotein oxidation measured as radical formation by electronspin resonance (ESR) spectroscopy, as thiol loss by the DTNBassay and as myosin heavy chain (MHC) disulfide crosslinkingby SDS-PAGE. Pomace from red wine productionwith a total phenol of 9.9 mg gallic acid equivalent/g protectedagainst protein radical formation and against MHC crosslinking,but not against thiol loss by addition of 2.0 % (w/w)to the beef patties. Pomace from white wine production with atotal phenol of 4.0 mg gallic acid equivalent/g only protectedagainst MHC cross-linking. For both types of wine pomace,protein modifications not seen for sulfite addition were observedand were proposed to involve covalent phenol additionto proteins. Red wine pomace may be an alternative to sulfiteas a meat additive for protection of beef patties against proteinoxidation. PB Springer YR 2016 FD 2016-03 LK http://hdl.handle.net/10259/4303 UL http://hdl.handle.net/10259/4303 LA eng NO AutonomousGovernment of Castilla y León through the research projects(BU268A11-2 and BU282U13) and the Danish Council for IndependentResearch |Technology and Production within the Danish Agency for ScienceTechnology and Innovation for granting the project entitled:BAntioxidant mechanisms of natural phenolic compounds against proteincross-link formation in meat and meat systems^ (11-117033). DS Repositorio Institucional de la Universidad de Burgos RD 24-dic-2024