cis-2-hexenal
green aldehyde Key food odorantFound in 2 ingredients across the CompKitchen flavor graph.
Look up another compound — search by name, CAS number, PubChem CID, or FEMA #.
Key food odorant (individualist)
Dunkel et al. 2014Identified in the meta-analysis of 227 food samples as one of 151 individualist odorants — appears in <5% of foods, carries the diagnostic signature of specific ingredients. Characteristic odor: green, apple-like.
Properties
- Odor description
- grassy
- Odor threshold — in a food matrix
- 2.5 ppb – 1202 ppb median 119 ppb · 10 published values · see all 10 with sources
- CAS number
- 505-57-7
FEMA GRAS — Generally Recognized As Safe for flavoring use
- FEMA number
- 2560
- GRAS publication
- GRAS 3
- FEMA primary name
- 2-HEXENAL
Use-level matrix not extracted for this substance — check the source publication for current ppm guidance.
Published thresholds
10 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
2.5 ppb – 1202 ppbMeasured in a real food, where the matrix shifts detection — not a clean-water value.
| Threshold | Matrix | Source | Paper |
|---|---|---|---|
| 0.130 ppb | water (food: melon) | Literature corpus | — |
| Flagged: 916× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden. | |||
| 0.950 ppb | water (food: tomato) | Literature corpus | — |
| Flagged: 125× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden. | |||
| 2.5 ppb | water (food: tea) | Literature corpus | — |
| 17.0 ppb | water (food: goat milk) | Literature corpus | — |
| 63.3 ppb | water (food: apple) | Literature corpus | — |
| 175 ppb | water (food: unknown) | Literature corpus | — |
| 180 ppb | water (food: fish) | Literature corpus | — |
| 190 ppb | water (food: reference standard (water)) | Literature corpus | — |
| 853 ppb | water (food: bread) | Literature corpus | — |
| 1202 ppb | water (food: olive oil) | Literature corpus | — |
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.
Found in
Measured impact first, then profile shareEvery ingredient known to contain cis-2-hexenal. 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 cis-2-hexenal in it.
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