The dose-dependent effects of green tea extract (100, 500, or 1500 ppm) on the textural and oxidative stability of
meat emulsionswere investigated, and compared to a control meat emulsion without extract. All levels of green
tea extract inhibited formation of TBARS as a measure for lipid oxidation. Overall protein thiol oxidation and
myosin heavy chain (MHC) cross-linking were inhibited by 100 ppm green tea extract without jeopardizing
the textural stability, while increasing concentrations of extract resulted in reduced thiol concentration and
elevated levels of non-reducible protein modifications. Addition of 1500 ppm green tea extract was found to
modify MHC as evaluated by SDS-PAGE combining both protein staining and specific thiol staining, indicating
that protein modifications generated through reactions of green tea phenolic compounds with protein thiols,
disrupted the meat emulsion properties leading to reduced water holding capacity and textural stability.
Hence, a lowdose of green tea extract preserves both the textural and the oxidative stability of the meat proteins