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  • Effect of citric acid addit...
    Nives, Marušić Radovčić; Karlović Sven; Medić Helga; Anet, Režek Jambrak

    Journal of food science and technology, 03/2021, Letnik: 58, Številka: 3
    Journal Article

    The aim of this study was to examine the influence of different concentrations of citric acid (0, 300, 400 and 500 mg/L) on the physical and functional properties of pasteurized liquid whole eggs (LWE) over 4 weeks of storage. The properties tested include pH, conductivity, colour, particle size, rheological, and textural properties, as well as protein solubility, foaming and emulsification. The 4 weeks of storage had a statistically significant ( P  < 0.05) effect on every tested parameter, while the addition of citric acid had a statistically significant ( P  < 0.05) effect on pH, conductivity, L * and b * values, protein solubility, emulsion activity index, emulsion capacity, emulsion stability, and an increase in foaming and texture parameters, but not on rheological parameters. Citric acid addition and a storage period of 4 weeks resulted in a change of pH and an increase in protein solubility. It also led to a lower foaming capacity and a larger drainage of the system, which causes a lower power (work load) requirement to break formed gels. Apparent viscosity did not change significantly in the samples with citric acid.