MDA is one of themajor lipid peroxidation products. This aldehyde
is formed during lipid peroxidation of fatty acids with
three or more double bonds. Dietary inclusion of yeast autolysate
and black cumin seed did not affect the yolk MDA concentration
of eggs stored for 1, 28 and 45 d at 4 °C (Table 5).
Similarly, Yalçın et al. (2010) found that yeast autolysate
supplementation did not affect the MDA concentration of eggs.
However, Zhang et al. (2005) reported that dietary supplementation
with S. cerevisiae improved the oxidative stability of broiler
meat and suggested that this was due to some antioxidant
factors present in S. cerevisiae shifting the oxidative fat or fatty
acid profile in the meat.