citrus

Found in 1 ingredient across the CompKitchen flavor graph.

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

Properties

Odor threshold — in a food matrix: 0.600 ppb – 517 ppb median 6.0 ppb · 11 published values · see all 12 with sources
CAS number: 3387-41-5

Regulatory · United States

FEMA GRAS — Generally Recognized As Safe for flavoring use

~ Likely match

FEMA number: 2318
GRAS publication: GRAS 3
FEMA primary name: CITRUS PEELS, EXTRACT

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

Source: FEMA GRAS publications 1-33. 1 related FEMA record for this name — verify the exact substance for regulatory use.

Published thresholds

12 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.

In a food matrix

0.600 ppb – 517 ppb

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

Threshold	Matrix	Source	Paper
0.600 ppb	water (food: milk)	Literature corpus	39824497
1.2 ppb	water (food: lemon)	Literature corpus	20862741, 30009387, 31502246 +3
1.4 ppb	water (food: orange)	Literature corpus	37515910
4.8 ppb	water (food: rice)	Literature corpus	24708588
5.8 ppb	water (food: beer)	Literature corpus	35292687, 38698043
6.0 ppb	water (food: tea)	Literature corpus	21404434, 36540235, 41549111
8.0 ppb	water (food: tomato)	Literature corpus	40950592
19.0 ppb SIDA	water (food: blueberry)	Literature corpus	28490131, 12467918, 12710722 +124
517 ppb	water (food: rum)	Literature corpus	16753919, 17487612, 35523852 +1
969 ppb SIDA	water (food: unknown)	Literature corpus	28490131, 12467918, 12710722 +104
Flagged: 160× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden.
974 ppb SIDA	water (food: peach)	Literature corpus	28490131, 40782165
Flagged: 161× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden.

Other matrix

6300 ppb

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

Threshold	Matrix	Source	Paper
6300 ppb SIDA	starch	Rychlik 1998 · 1 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 share

Every ingredient known to contain citrus. 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 citrus in it.

cheese

dairy

295 cmpds

Into the chemistry?

Get a molecule-level pairing breakdown each week — which ingredients share a compound, and why it matters at the table. Free, no spam.

Prefer an account? Create a free account to save pairings and unlock the full chemistry.

Try the pairing tools to see which ingredient combinations rely on citrus, or compare two ingredients side-by-side.