l-tyrosine
other nitrogen compoundFound in 586 ingredients across the CompKitchen flavor graph.
Look up another compound — search by name, CAS number, PubChem CID, or FEMA #.
- Formula
- C9H11NO3
- Molecular weight
- 181.19 g/mol
- PubChem CID
- 6057 — full record on PubChem
Properties
- Odor description
- odorless
- Odor threshold — in a food matrix
- 1.0 ppb – 73.0 ppb median 37.0 ppb · 2 published values · see all 2 with sources
- Volatility
- low
- CAS number
- 60-18-4
FEMA GRAS — Generally Recognized As Safe for flavoring use
- FEMA number
- 3736
- GRAS publication
- GRAS 13
- FEMA primary name
- L-TYROSINE
Use-level matrix not extracted for this substance — check the source publication for current ppm guidance.
Published thresholds
2 measured values from the literature. Grouped by what was actually measured — a threshold smelled in clean water, tasted in the mouth, or measured in a real food are three different quantities and are not pooled.
In a food matrix
1.0 ppb – 73.0 ppbMeasured in a real food, where the matrix shifts detection — not a clean-water value.
| Threshold | Matrix | Source | Paper |
|---|---|---|---|
| 1.0 ppb SIDA | water (food: unknown) | Literature corpus | 35163915, 23884120, 31195973 +2 |
| 73.0 ppb | water (food: garlic) | Literature corpus | 35558794 |
Only values we can attribute are listed. Where a compendium's licence does not permit public attribution its figures are omitted here, so every number on this page traces to a citable source.
Where you'd actually smell it
Odor Activity Value = measured concentration ÷ odor threshold (37.0 ppb, the engine's canonical value — see the 2 published values). OAV ≥ 1 = perceptible.
| Food | Concentration (ppb) | OAV | Source |
|---|---|---|---|
| onion | 884.0 | 23.9 ⚡ | Corpus paper |
| garlic | 218.0 | 5.89 | Corpus paper |
Concentrations from PubMed Central Open Access papers (free literature corpus, MIT-style licensed). Copper = OAV ≥ 10 (strongly perceptible). Green = OAV ≥ 1 (perceptible).
Found in
Measured impact first, then profile shareEvery ingredient known to contain l-tyrosine. Ingredients with a measured concentration come first, ranked by odour activity; the rest follow by how large a share of that ingredient's profile this molecule is. The figure beside each is how many different compounds that ingredient has in total — not the concentration of l-tyrosine in it. Full concentrations are in the OAV table above.
The inverted compound index is a Pro feature — reverse-search any of 5,240 flavor molecules across the full graph.
Get a molecule-level pairing breakdown each week — which ingredients share a compound, and why it matters at the table. Free, no spam.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Try the pairing tools to see which ingredient combinations rely on l-tyrosine, or compare two ingredients side-by-side.