2-trans-nonenal

green aldehyde

Found in 1 ingredient across the CompKitchen flavor graph.

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

Properties

Odor description: chicken flavour
Odor threshold — orthonasal, in clean water: 0.090 ppb – 0.600 ppb median 0.345 ppb · 2 published values · see all 22 with sources
CAS number: 2463-53-8

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

22 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

0.090 ppb – 0.600 ppb

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

Threshold	Matrix	Source	Paper
0.090 ppb	water_odor	Leffingwell	—
0.600 ppb	water/ethanol 6:4 (food: american bourbon whisky)	Literature corpus	—

In a food matrix

0.080 ppb – 67.5 ppb

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

Threshold	Matrix	Source	Paper
0.080 ppb	water (food: wheat porridge / bread crumb)	Literature corpus	—
0.140 ppb	water (food: melon)	Literature corpus	—
0.190 ppb	water (food: green tea infusion (jingshan cha))	Literature corpus	—
0.400 ppb	water (food: rum)	Literature corpus	—
0.424 ppb	water (food: rice)	Literature corpus	—
0.640 ppb	water (food: apple)	Literature corpus	—
0.690 ppb	water (food: beef vegetable gravy)	Literature corpus	—
0.690 ppb	water (food: pork vegetable gravy)	Literature corpus	—
0.690 ppb	water (food: reference standard (water))	Literature corpus	—
0.700 ppb	water (food: chocolate)	Literature corpus	—
0.800 ppb	water (food: hand-squeezed grapefruit juice)	Literature corpus	—
1.0 ppb	water (food: smoked cooked loin (pork))	Literature corpus	—
14.0 ppb	water (food: tea)	Literature corpus	—
19.0 ppb	water (food: milk)	Literature corpus	—
67.5 ppb	water (food: unknown)	Literature corpus	—
83.0 ppb	water (food: soy sauce)	Literature corpus	—
Flagged: 119× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden.
93.0 ppb	water (food: beef)	Literature corpus	—
Flagged: 133× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden.
1136 ppb	water (food: tomato)	Literature corpus	—
Flagged: 1623× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden.
1160 ppb	water (food: ginger)	Literature corpus	—
Flagged: 1657× 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

6.0 ppb

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

Threshold	Matrix	Source	Paper
6.0 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-trans-nonenal. 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-trans-nonenal in it.

chicken

meat

443 cmpds

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