In addition, the endogenous b-glucosidase activity in Monascus
aged vinegar over 12 h soaking was higher than the counterparts in
water soaking (Fig. 4). The phenomenon accounted for the differences
in isoflavone forms of soy germs in both soaking processes.
The Monascus aged vinegar was utilized to soak soy germ for
72 h at 25 C, resulting in the increase of aglycones from 1.18% to
36.80%. In contrast, the water soaking at the same condition
increased the proportion of the aglycones in soy germs to 17.16%
(Table 1).