The effect of the ACC value on GABA accumulation was evaluated,
and the results are shown in Fig. 3. The five types of StAEW
used in this comparison have similar pH values but different ACC
values of 4.77, 9.88,14.68,17.76, and 28.66 mg/L for treatments 1e5,
respectively. As the BR germinated, the GABA content increased for
all treatments, but the maximum GABA content of 24.36 mg/100 g
occurred for the StAEW with ACC 17.76 mg/L. This result indicates
that a moderate ACC value is beneficial for GABA accumulation