trans-2-undecenal

Key food odorant

Found in 1 ingredient 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. 2014

Identified 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.

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

Properties

Odor threshold — orthonasal, in clean water: 340 ppb 1 published value · see all 6 with sources
CAS number: 2463-77-6

Regulatory · United States

FEMA GRAS — Generally Recognized As Safe for flavoring use

✓ Exact match

FEMA number: 3423
GRAS publication: GRAS 7
FEMA primary name: 2-UNDECENAL

Use-level matrix not extracted for this substance — check the source publication for current ppm guidance.

Source: FEMA GRAS publications 1-33.

Published thresholds

6 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

340 ppb

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

Threshold	Matrix	Source	Paper
340 ppb	water	PMC open access	—

In a food matrix

1.4 ppb – 108 ppb

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

Threshold	Matrix	Source	Paper
1.4 ppb	water (food: beef vegetable gravy)	Literature corpus	10552650, 32165700, 34653803 +1
1.4 ppb	water (food: pork vegetable gravy)	Literature corpus	10552650, 32165700, 34653803 +1
1.4 ppb	water (food: reference standard (water))	Literature corpus	10552650, 32165700, 34653803 +1
7.5 ppb	water (food: milk)	Literature corpus	10552650, 39479676
108 ppb	water (food: unknown)	Literature corpus	32165700, 34653803

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 trans-2-undecenal. 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 trans-2-undecenal in it.

venison

meat

29 cmpds

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