L-Tryptophan is an amino acid with the chemical formula C11H12N2O2, also known as tryptophan, indole-3-alanine, or L-beta-3-indolylalanine. In food and beverage production, it functions primarily as a nutritional additive, used to fortify products where protein quality or amino acid profiles need support. It is regulated under Reg. 1333/2008, which sets the conditions for its use as a food additive in the EU.
Manufacturers typically use L-tryptophan in dietary supplements, clinical nutrition, and certain beverage applications. It is available as a white crystalline powder, and its solubility in water makes it suitable for liquid formulations, though solubility can vary with pH and temperature. As with many amino acids, it should be stored in a cool, dry place away from strong oxidizers. Formulators should consider its stability under heat and light, and its potential to participate in Maillard reactions when reducing sugars are present.
Also known as Tryptophan, Indole-3-alanine, L-beta-3-Indolylalanine
| Appearance | Crystalline powder. |
| Shelf life | 36 months |
| Storage | Cool, dry place |
| Test | Requirement |
|---|---|
| Assay | >=98.5% |
| Heavy metals | Per specification |
| Residual solvents | Per specification |
| UV absorption spectrum | Per specification |
QC requirements shown apply to every destination or to the EU. Lot-specific results (assay, moisture, pH, microbiological and heavy-metal testing) vary by production batch and are supplied on the Certificate of Analysis for each shipment.
Yes. Every shipment of L-Tryptophan comes with a batch-specific Certificate of Analysis. If you need further documents, such as an allergen or GMO declaration or a certificate of origin, tell us at the enquiry stage and we will confirm what is available.
Storage: Cool, dry place. Shelf life: 36 months.
The certifications associated with L-Tryptophan include FSSC 22000, CNAS CoA, EU Novel Food check if new fermentation strain. Tell us which certification your audit requires and we will confirm what can be provided before you order.
In most cases, yes. Tell us your target volume and application on the contact form and we'll confirm sample availability along with indicative pricing and lead time.