With the increasing of the aging time, the activity of phenylalanine ammonialyase and polyphenol oxidase is decreasing, but the activity of amylase increases at first and then decreases finally.

• 随醇化时间的延长，苯丙氨酸解氨酶和多酚氧化酶的活性呈现下降趋势，而淀粉酶随醇化时间的延长活性先上升后下降。