kaempferol

herbal phenol

Found in 418 ingredients across the CompKitchen flavor graph.

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

2D Lewis Structure

Formula: C15H10O6
Molecular weight: 286.24 g/mol
PubChem CID: 5280863 — full record on PubChem

Properties

Odor description: bitter
Odor threshold — in a food matrix: 105 ppb – 1370 ppb median 142 ppb · 4 published values · see all 4 with sources
Volatility: low
CAS number: 520-18-3
Retention index: 44

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

4 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

105 ppb – 1370 ppb

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

Threshold	Matrix	Source	Paper
0.020 ppb	water (food: tea)	Literature corpus	26978340, 34299388, 36540235 +6
Flagged: 7123× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden.
105 ppb	water (food: unknown)	Literature corpus	35056794, 36037121, 37709800 +5
180 ppb	water (food: fish)	Literature corpus	40351771
1370 ppb	water (food: beer)	Literature corpus	36496475, 38698043, 41730959

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.

Where you'd actually smell it

Odor Activity Value = measured concentration ÷ odor threshold (142.4505 ppb, the engine's canonical value — see the 4 published values). OAV ≥ 1 = perceptible.

Food	Concentration (ppb)	OAV	Source
mentha spicata	740.0	5.19	Corpus paper
beer	20.7	0.15	—
fish	8.1	0.06	—
tea	1.5	0.01	—

Concentrations from PubMed Central Open Access papers (free literature corpus, MIT-style licensed). Copper = OAV ≥ 10 (strongly perceptible). Green = OAV ≥ 1 (perceptible).

Found in

Measured impact first, then profile share

Every ingredient known to contain kaempferol. 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 kaempferol in it. Full concentrations are in the OAV table above.

457 cmpds

617 cmpds

5 cmpds

45 cmpds