1-octanal
green aldehyde Key food odorantFound in 2 ingredients across the CompKitchen flavor graph.
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Key food odorant (intermediary)
Dunkel et al. 2014Identified in the meta-analysis of 227 food samples as one of 57 intermediary odorants — appears in 5–25% of foods. Characteristic odor: citrus, fatty.
Properties
- Odor description
- fishy
- Odor threshold — orthonasal, in clean water
- 0.700 ppb – 4.3 ppb median 2.5 ppb · 2 published values · see all 39 with sources
- CAS number
- 124-13-0
- Retention index
- 1296
Published thresholds
39 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.
Orthonasal, in clean water
0.700 ppb – 4.3 ppbThe reference measurement — smelled in water. OAV is computed against this.
| Threshold | Matrix | Source | Paper |
|---|---|---|---|
| 0.700 ppb | water_odor | Leffingwell | — |
| 4.3 ppb SIDA | water | Rychlik 1998 · 2 studies | — |
In a food matrix
0.150 ppb – 784 ppbMeasured in a real food, where the matrix shifts detection — not a clean-water value.
| Threshold | Matrix | Source | Paper |
|---|---|---|---|
| 0.150 ppb | water (food: lemon) | Literature corpus | — |
| 0.200 ppb | water (food: chocolate) | Literature corpus | — |
| 0.700 ppb | water (food: reference standard (water)) | Literature corpus | — |
| 0.772 ppb | water (food: beer) | Literature corpus | — |
| 0.800 ppb | water (food: orange juice (reconstituted from concentrate)) | Literature corpus | — |
| 0.880 ppb | water (food: grape) | Literature corpus | — |
| 1.1 ppb | water (food: lime) | Literature corpus | — |
| 1.3 ppb | water (food: orange) | Literature corpus | — |
| 1.4 ppb | water (food: goat milk) | Literature corpus | — |
| 3.4 ppb | water (food: reference standard (water)) | Literature corpus | — |
| 6.1 ppb | water (food: pork) | Literature corpus | — |
| 6.9 ppb | water (food: smoked cooked loin (pork)) | Literature corpus | — |
| 6.9 ppb | water (food: beef vegetable gravy) | Literature corpus | — |
| 6.9 ppb | water (food: pork vegetable gravy) | Literature corpus | — |
| 8.0 ppb | water (food: hand-squeezed grapefruit juice) | Literature corpus | — |
| 9.0 ppb | water (food: fish) | Literature corpus | — |
| 13.0 ppb | water (food: mushroom) | Literature corpus | — |
| 28.1 ppb | water (food: milk) | Literature corpus | — |
| 33.6 ppb | water (food: rum) | Literature corpus | — |
| 41.0 ppb | water (food: melon) | Literature corpus | — |
| 43.1 ppb | water (food: unknown) | Literature corpus | — |
| 56.0 ppb | water (food: honey) | Literature corpus | — |
| 60.0 ppb | water (food: soy sauce) | Literature corpus | — |
| 84.0 ppb | water (food: lamb) | Literature corpus | — |
| 307 ppb | water (food: wine) | Literature corpus | — |
| 506 ppb | water (food: ginger) | Literature corpus | — |
| 655 ppb | water (food: rice) | Literature corpus | — |
| 784 ppb | water (food: tea) | Literature corpus | — |
| 1138 ppb | water (food: beef) | Literature corpus | — |
| Flagged: 126× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden. | |||
| 1280 ppb | water (food: olive oil) | Literature corpus | — |
| Flagged: 142× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden. | |||
| 1280 ppb | water (food: bread) | Literature corpus | — |
| Flagged: 142× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden. | |||
Retronasal / in-mouth
25.0 ppb – 900 ppbTasted rather than smelled — a different sense, not comparable.
| Threshold | Matrix | Source | Paper |
|---|---|---|---|
| 25.0 ppb | water_flavor | Leffingwell | — |
| 25.0 ppb SIDA | water_retronasal | Rychlik 1998 · 2 studies | — |
| 900 ppb SIDA | oil_retronasal | Rychlik 1998 · 1 studies | — |
In air
0.010 ppb – 0.174 ppbAirborne detection — not comparable to a water threshold.
| Threshold | Matrix | Source | Paper |
|---|---|---|---|
| 0.010 ppb | air | Nagata 2003 | — |
| 0.174 ppb | air (C2_cometto_muniz_abraham) | Cometto-Muñiz (PMC) | — |
Other matrix
56.0 ppbMeasured in a non-aqueous medium (oil, starch, cellulose).
| Threshold | Matrix | Source | Paper |
|---|---|---|---|
| 56.0 ppb SIDA | oil_orthonasal | Rychlik 1998 · 2 studies | — |
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 1-octanal. 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 1-octanal in it.
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