The effects of nitrite and WFC levels on relative proportions of three myoglobin (Mb) forms in meat batter are shown in Fig. 3. In meat batters without nitrite, addition of WFC had no influence (P > 0.05) on the changes in proportions of deoxymyoglobin (MbFe2+), oxymyoglobin (MbFe2+O2), and metmyoglobin (MbFe3+).