Oxidants are required to improve the structure and final
loaf volume of bread as well as to increase the dough
strength. Due to the death of the yeast cells during frozen
storage, reducing substances (particularly glutathione) are
formed, leading to a reduction in gluten strength as a result
of weakened disulphide bridges that are essential in the
stabilization of gluten network (Kline and Sugihara, 1968;
Hsu et al., 1979; Stauffer, 1993). Hence, more oxidants are
required to compensate this reducing action in the frozen
dough production.