L-phenylalanine (L-Phe) is one of essential amino acids for humans.It is an important chemical intermediate in medicine and food industry.There is a huge market for L-Phe.

• L-苯丙氨酸是人体必须但自生无法合成的八种必需氨基酸之一，是一种重要的医药和食用化学品中间体。