1-octene-3-one

fruity ketone Key food odorant

Found in 2 ingredients across the CompKitchen flavor graph.

Look up another compound — search by name, CAS number, PubChem CID, or FEMA #.

Key food odorant (generalist)

Dunkel et al. 2014

Identified in the meta-analysis of 227 food samples as one of 16 generalist odorants — appears in >25% of foods, typically from generic Maillard, lipid-oxidation, or fermentation pathways. Characteristic odor: mushroom-like.

Source: Angew. Chem. Int. Ed. 2014, 53, 7124–7143

Properties

Odor description: sweet, fruity
Odor threshold — orthonasal, in clean water: 0.005 ppb 2 published values · see all 17 with sources
CAS number: 4312-99-6
Retention index: 979

Not in FEMA GRAS publications 1-33. Of 3,367 listed flavoring substances, none match this compound name. May still be food-safe under other regulatory routes (FDA 21 CFR 172, EFSA, JECFA) — check femaflavor.org for the authoritative current list.

Published thresholds

17 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

0.005 ppb

The reference measurement — smelled in water. OAV is computed against this.

Threshold	Matrix	Source	Paper
0.005 ppb	water_odor	Leffingwell	—
0.005 ppb SIDA	water	Rychlik 1998 · 1 studies	—

In a food matrix

0.005 ppb – 1.0 ppb

Measured in a real food, where the matrix shifts detection — not a clean-water value.

Threshold	Matrix	Source	Paper
0.005 ppb SIDA	water (food: smoked cooked loin (pork))	Literature corpus	31894982
0.007 ppb SIDA	water (food: longjing green tea infusion)	Literature corpus	31894982
0.016 ppb SIDA	water (food: green tea infusion (jingshan cha))	Literature corpus	31894982
0.016 ppb SIDA	water (food: reference standard (water))	Literature corpus	31894982
0.036 ppb SIDA	water (food: beef vegetable gravy)	Literature corpus	31894982
0.036 ppb SIDA	water (food: pork vegetable gravy)	Literature corpus	31894982
1.0 ppb SIDA	water (food: hand-squeezed grapefruit juice)	Literature corpus	31894982
6137 ppb SIDA	water (food: unknown)	Literature corpus	31894982
Flagged: 236038× 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

0.010 ppb – 0.300 ppb

Tasted rather than smelled — a different sense, not comparable.

Threshold	Matrix	Source	Paper
0.010 ppb SIDA	water_retronasal	Rychlik 1998 · 1 studies	—
0.100 ppb	water_flavor	Leffingwell	—
0.300 ppb SIDA	oil_retronasal	Rychlik 1998 · 1 studies	—

Other matrix

2.0 ppb – 10.0 ppb

Measured in a non-aqueous medium (oil, starch, cellulose).

Threshold	Matrix	Source	Paper
0.044 ppb SIDA	starch	Rychlik 1998 · 1 studies	—
Flagged: 136× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden.
2.0 ppb SIDA	cellulose	Rychlik 1998 · 1 studies	—
10.0 ppb SIDA	oil_orthonasal	Rychlik 1998 · 1 studies	—
10.0 ppb SIDA	oil (sunflower oil) (food: cocoa beans)	Literature corpus	31894982

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 share

Every ingredient known to contain 1-octene-3-one. 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-octene-3-one in it.

72 cmpds

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