2-(e)-octenal

green aldehyde

Found in 2 ingredients across the CompKitchen flavor graph.

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

Properties

Odor threshold — orthonasal, in clean water: 3.0 ppb 1 published value · see all 11 with sources
CAS number: 2363-89-5
Retention index: 1358

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

11 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

3.0 ppb

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

Threshold	Matrix	Source	Paper
3.0 ppb	water_odor	Leffingwell	—

In a food matrix

1.3 ppb – 1058 ppb

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

Threshold	Matrix	Source	Paper
1.3 ppb	water (food: apple)	Literature corpus	—
6.0 ppb	water (food: unknown)	Literature corpus	—
12.0 ppb	water (food: fish)	Literature corpus	—
17.0 ppb	water (food: milk)	Literature corpus	—
83.0 ppb	water (food: beef)	Literature corpus	—
106 ppb	water (food: chocolate)	Literature corpus	—
550 ppb	water (food: rum)	Literature corpus	—
1056 ppb	water (food: bread)	Literature corpus	—
1058 ppb	water (food: ginger)	Literature corpus	—

Retronasal / in-mouth

90.0 ppb

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

Threshold	Matrix	Source	Paper
90.0 ppb	water_flavor	Leffingwell	—

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 2-(e)-octenal. 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 2-(e)-octenal in it.

431 cmpds

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