The effects of natural antioxidants on oxidative processes and metmyoglobin reducing activity in beef patties

A.E.D. Bekhit, G.H. Geesink, M.A. Ilian, J.D. Morton, R. Bickerstaffe

    Research output: Contribution to journalArticleAcademicpeer-review

    98 Citations (Scopus)

    Abstract

    The effects of antioxidants on oxidative processes and metmyoglobin-reducing activity in beef patties were investigated in two experiments. In the first experiment colour, colour stability, TBA values and MetMb-reducing activity were measured during storage, at 2 oC, of raw beef patties treated with four antioxidants (resveratrol, carnosine, quercetin and rutin) at two concentrations (110 and 550 mol/kgmeat). In the second experiment the method of application of resveratrol was tested further. The storage period and antioxidant treatment affected colour, colour stability and TBA values. The colour-stabilising effect of the antioxidants was in the following order resveratrol>quercetin>rutin>carnosine. The performance of resveratrol was affected by the method of application. Resveratrol gave the highest protective effect against lipid peroxidation. Carnosine acted as a pro-oxidant under the specified experimental conditions. MetMb-reducing activity remained relatively stable during storage. It was concluded that the lack of NADH and not the loss of MetMb enzymatic activity was the factor limiting the MetMb-reducing activity in beef patties and, consequently, the factor dictating the colour and colour stability of beef patties.
    Original languageEnglish
    Pages (from-to)175-187
    JournalFood Chemistry
    Volume81
    Issue number2
    DOIs
    Publication statusPublished - 2003

    Keywords

    • lipid-peroxidation
    • vitamin-e
    • reductase-activity
    • color stability
    • ground pork
    • carnosine
    • muscles
    • iron
    • resveratrol
    • mechanism

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