quercetin

herbal phenol

Found in 382 ingredients across the CompKitchen flavor graph.

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

2D Lewis Structure

Formula: C15H10O7
Molecular weight: 302.23 g/mol
PubChem CID: 5280343 — full record on PubChem

Properties

Odor description: bitter
Odor threshold — in a food matrix: 7.0 ppb – 1201 ppb median 21.2 ppb · 5 published values · see all 5 with sources
Volatility: low
CAS number: 117-39-5
Retention index: 34

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

5 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

7.0 ppb – 1201 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, 36540235, 36570894 +5
Flagged: 1059× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden.
7.0 ppb	water (food: unknown)	Literature corpus	26142838, 28018403, 31227024 +16
21.2 ppb	water (food: tomato)	Literature corpus	38253713
224 ppb	water (food: beer)	Literature corpus	38698043, 41730959
1201 ppb	water (food: fish)	Literature corpus	40351771

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 (21.18 ppb, the engine's canonical value — see the 5 published values). OAV ≥ 1 = perceptible.

Food	Concentration (ppb)	OAV	Source
cocoa	25000.0	1180 ⚡	Corpus paper
date (bejaoui landrace)	50.0	2.36	—
beer	20.4	0.96	—
tomato	13.2	0.63	—
fish	7.0	0.33	—
tea	2.6	0.12	—

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 quercetin. 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 quercetin in it. Full concentrations are in the OAV table above.

cocoa

measured · OAV 1180.36

484 cmpds

457 cmpds

519 cmpds

617 cmpds