L-tyrosine (Tyr) is an important nutritional Essential amino acid, which plays an important role in human and animal metabolism, growth and development, and is widely used in food, feed, medicine and chemical industries. It is often used as a nutritional supplement for patients with Phenylketonuria, and as a raw material for the preparation of polypeptide hormones, antibiotics, L-DOPA, melanin, p-hydroxycinnamic acid, p-hydroxystyrene and other pharmaceutical and chemical products. However, with the discovery of more high-value L-tyrosine derivatives such as tanshinone, Resveratrol, Hydroxytyrosol, etc. in vivo, L-tyrosine is increasingly developing towards platform compounds. |