L-Phenylalanine is one of the twenty common amino acids. It is a powder solid at room temperature. L-Phenylalanine is an essential amino acid. Because the benzene ring at one end of the molecule is hydrophobic, L-phenylalanine is classified as a nonpolar molecule. L-Phenylalanine is an electrically neutral amino acid, and "uuu" and "UUC" are its codons. L-Phenylalanine is the precursor of tyrosine, dopamine, norepinephrine, epinephrine and melanin. L-Phenylalanine is found naturally in mammalian milk. It is used in the manufacture of food and beverage products and is sold as a nutritional supplement with its famous analgesic and antidepressant effects. It is a direct precursor of phenylethylamine, a neuromodulator, and a common dietary supplement. The human body cannot synthesize phenylalanine by itself, so it must be taken from the diet. Generally, L-phenylalanine is produced by plants. Therefore, the main use of this product is for functional food additives.
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