To elucidate the effect of glutathione (GSH) released by lysed
yeast during freezingethawing, the glutathione was assayed in
different frozen and fresh sweet doughs. The results presented are
shown in Fig. 6. The GSH amount significantly increased (P < 0.05)
with increasing freezing rate. The highest GSH amount was obtained
at 40 C followed by liquid nitrogen treatment (9.16 0.51
and 7.81 0.34) compared to the reference.