Fig. 1. Levels of glutamic acid (GA; A) and c-aminobutyric acid (GABA; B) of mixed
and fermented doughs, and bread samples lacking yeast and supplemented with
glutamic acid decarboxylase (Yersinia intermedia, GADyers) [0 (reference), 1.5, 4.5
and 12.5 enzyme units (EU)/10 g of flour]. (a–e) Tukey groups with P value < 0.05
for comparison of dynamics of GA (A) and GABA (B) levels.