In the enzymatic preparation of L-Phe, aminotransferase as a key enzyme for the aminotransformation, could make phenylpyruvate to accept the amidogen from L-aspartic acid.

• 在酶法制备L-苯丙氨酸的工艺路线中,转氨酶作为转氨反应的关键酶源,可使苯丙酮酸接受L-天冬氨酸的氨基生成L-苯丙氨酸。